Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"quan chi con snippets" » "luan chi con snippets", "quan che con snippets", "quan chu con snippets", "quan chi cong snippets", "quan cho con snippets", "quan khi con 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: (((("quan chi con snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan chi con snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan chi con snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan chi con snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.