Perhaps you should try some spelling variations:
"dung dat doc snippets" » "dung va doc snippets", "dung tai doc snippets", "dung dat duoc snippets", "dung day doc snippets", "dung dat nuoc 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: (((("dung dat doc snippets") or ("dung vbugss code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung dat doc snippets") OR ("dung vbugss code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung dat doc snippets ) or ( dung vbugss code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dat doc snippets") or ("dung vbugss code snippets"))) or ("locating bug code snippets"))*.