Perhaps you should try some spelling variations:
"trinh tu model snippets" » "trinh ky model snippets", "trinh do model snippets", "trinh a model snippets", "trinh 1 model snippets", "trinh _ model snippets"
"cong bug code snippets" » "cong dung code snippets", "cong hung code snippets", "cong bang code snippets", "cong bug core snippets"
"locating bug 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 tu model snippets") or ("cong bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh tu model snippets") OR ("cong bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh tu model snippets ) or ( cong bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh tu model snippets") or ("cong bug code snippets"))) or ("locating bug code snippets"))*.