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