Perhaps you should try some spelling variations:
"nang van code snippets" » "dang van code snippets", "tang van code snippets", "lang van code snippets", "nang van de snippets", "nang van hoe snippets", "nang van cong snippets", "nang van code slippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug code slippers"
"locating bug code snippets" » "locating bug code slippers"

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: (((("nang van code snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang van code snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang van code snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang van code snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.