Your best bet is to search for [perl] "Class Data" this will restrict to all terms with Class and Data as adjacent words - as colons are stripped out during analysis this should also match Class::Data, however it will also match Class-DataClass Data etc... - you're then going to have to search through the matches yourself (there are only 2 on StackOverflow)
The only search engine I know of that doesn't ignore special characters is SymbolHound. It's a search engine designed for programmers, so it indexes programming-related sites and does not strip symbols away like other search engines.
The new search engine handles this much better, we'll no longer direct and give some decent results for [perl] Class::Data. That being said, I think we can do even better on those results - I'll keep this example in mind as we tune.