Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung san vo snippets" » "dong san vo snippets", "dung sai vo snippets", "dung luan vo snippets", "dung san co snippets", "dung san va snippets", "dung san ho 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 san vo snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung san vo snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung san vo snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung san vo snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.