Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"lang son cac snippets" » "nang song cac snippets", "bang song cac snippets", "anh son cac snippets", "lang ton cac snippets", "lang con cac snippets", "lang son bac 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: (((("lang son cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lang son cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lang son cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lang son cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.