Perhaps you should try some spelling variations:
"dang nghe chat snippets" » "lang nghe chat snippets", "nang nghe chat snippets", "cong nghe chat snippets", "dang nghe chan snippets", "dang nghe cat snippets", "dang nghi chat snippets"
"dung java java snippets" » "dung va java 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: (((("dang nghe chat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang nghe chat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang nghe chat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang nghe chat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.