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