Perhaps you should try some spelling variations:
"ngang duoc chat snippets" » "nganh duoc chat snippets", "nhan duoc chat snippets", "ngang doc chat snippets", "ngang duoc pham snippets", "ngang hoc 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: (((("ngang duoc 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: (((("ngang duoc chat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngang duoc chat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngang duoc chat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.