Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"van thinh java snippets" » "van trinh java snippets", "van think java snippets", "van thanh java snippets", "van chinh java snippets", "van minh java snippets"
"dung dung cong snippets" » "duong dung cong snippets", "ung dung cong snippets", "dung ung cong snippets", "dung dung trong 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: (((("dung dung cong snippets") or ("van thinh java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung dung cong snippets") OR ("van thinh java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( dung dung cong snippets ) or ( van thinh java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dung cong snippets") or ("van thinh java snippets"))) or ("locating bugs code snippets"))*.