Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"phap cau de snippets" » "phan cau de snippets", "pha cau de snippets", "phap ca de snippets", "phap cau den snippets", "phap cau do snippets", "phap cuu de snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("phap cau de snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap cau de snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap cau de snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap cau de snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.