Perhaps you should try some spelling variations:
"dung trinh co snippets" » "dung tinh co snippets", "dong trinh co snippets", "cong trinh co snippets", "dung trinh do snippets", "dung trinh cong snippets", "dung trinh hoa snippets"
"dung ninh java snippets" » "dung vinh java snippets", "quang ninh java snippets", "dung dich java snippets", "dung trinh 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: (((("dung ninh java snippets") or ("dung trinh co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ninh java snippets") OR ("dung trinh co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ninh java snippets ) or ( dung trinh co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ninh java snippets") or ("dung trinh co snippets"))) or ("locating bug code snippets"))*.