Perhaps you should try some spelling variations:
"nhan duoc cac snippets" » "nhan cuoc cac snippets", "nhan quoc cac snippets", "phan duoc cac snippets", "nhan cuoc cach snippets", "nhan duoc chat snippets", "nhan duong cac 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: (((("nhan duoc cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan duoc cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan duoc cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan duoc cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.