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