Make sure you aren't typing until the page is finished loading. If you type in there too fast the word "search" may still remain in the box and mess up your results. I reported this issue in another thread, but it still remains. Like others have noted already, searching by your words finds all kinds of examples. The only thing I've ever seen is sometimes if the search phrase is only in CODE blocks of the forum and not in titles or other text it may not come back (I've searched for specific code keywords before that I know I saw in code and not found anything then later find the thread again and the keyword was right there in the CODE block.