Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"nam phuc cac snippets" » "nam thuc cac snippets", "nam thuoc cac snippets", "nang phuc cac snippets", "nam phuc cam snippets", "nam phuc ca snippets", "nam phuc cham 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: (((("nam phuc 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: (((("nam phuc cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam phuc cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam phuc cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.