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