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I always search to find whether my question is a duplicate or not before asking the question on Stack Overflow. But often I cannot find anything (maybe this is a language problem) and I ask my question. Then someone finds a duplicate question of my question and votes to close mine. So how can I avoid asking a duplicate question?

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What is there to solve? Your question will be closed as a duplicate of the earlier question, and that's just that. –  Yannis Aug 28 '12 at 8:41
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Besides searching (which you've done) it's also a matter of "experience". Some of us (me included) have spent far too much time here. So we have seen some questions come by more often. That makes it a lot easier to find the duplicate. –  Bart Aug 28 '12 at 8:42
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Don't feel too bad if your question is closed as a duplicate. You'll be helping others find answers too, by giving Stack Overflow, and by extension, search engines a different spelling of the same problem. –  Martijn Pieters Aug 28 '12 at 8:43
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@YannisRizos I think the OP meant he wanted to avoid asking duplicates. (i.e. have better luck finding them). I've rephrased the question to reflect that. –  Bart Aug 28 '12 at 8:48
    
@Bart Thanks for editing my post. –  Sai Ye Yan Naing Aye Aug 28 '12 at 8:52
    
as you type for a question it will be suggesting similar questions –  PrasoonMishra Sep 21 '12 at 12:19

2 Answers 2

up vote 11 down vote accepted

The only way to really avoid asking duplicate questions is to find them. You might think "Yes Captain Obvious, that's what I'm asking. How do I find them?". In all honesty, that is not always easy. (Have a look through my questions here on Meta. There are a couple of dupes. Even though I looked) Especially if there is a language gap or you don't know the exact terms to search for, finding the dupe might be hard. Just do the best you can, but don't worry about the occasional duplicate.

Duplicates are not always such a bad thing. Sure, they should most likely be closed or merged, but as Martijn also indicated, they help other users with a similar phrasing as yours find the duplicate question. So in a sense, you're helping others.

And the more you hang around here, the easier it will be for you to find the duplicate. Especially if you're active here on Meta, or within a particular tag, you'll see questions come by of which you know they've been asked before. That knowledge will help you to find duplicates more easily, as happened in the case of your question here on Meta.

So do the best you can to find them. But if on occasion you don't manage to, don't worry too much about asking a duplicate question. If that doesn't happen for the majority of questions you ask, you'll be just fine.

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Ironically, it is easier for experts to find duplicates than novices seeking answers, because experts know which terms are most significant, and the synonyms of significant terms, and which concepts are related. –  Raedwald May 17 at 10:34

But often I cannot find anything (maybe this is a language problem) and I ask my question. Then someone finds a duplicate question of my question and votes to close mine.

This is OK, and also shouldn't be considered surprising. Remember it's not your duplicate-finding ability versus someone else's duplicate-finding ability; it's instead your duplicate-finding ability versus the combined duplicate-finding ability of EVERYONE ELSE PUT TOGETHER. Put this way, it's clear that the latter is going to be more effective than the former!

The engine itself tries to offer something in between, something better than the asker alone, and it often works - many's the time when I have entered a question title and body just to get the automated possible-duplicate finder to find the dupe for me - after searching hasn't worked, of course. But there will always be times when we ourselves can't find it, but one of the thousands of other SO users can.

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