Perhaps you should try some spelling variations:
"tinh duoc cac snippets" » "trinh duoc cac snippets", "sinh duoc cac snippets", "tinh duc cac snippets", "tinh cuoc cach snippets", "tinh duoc chat snippets", "tinh 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: (((("tinh 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: (((("tinh duoc cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tinh duoc cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tinh duoc cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.