Perhaps you should try some spelling variations:
"gian mang cua snippets" » "gian lang cua snippets", "gian muong cua snippets", "gian quang cua snippets", "gian manh cua snippets", "gian dung cua snippets", "gian ban cua 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: (((("gian mang cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gian mang cua snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian mang cua snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian mang cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.