Perhaps you should try some spelling variations:
"trinh cong code snippets" » "trinh dung code snippets", "trinh cong cong snippets", "trinh cong co snippets", "trinh cong che snippets", "trinh cong code slippers"
"long than code snippets" » "song than code snippets", "luong thanh code snippets", "dong thanh code snippets", "long than one snippets", "long than code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 cong code snippets") or ("long than code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cong code snippets") OR ("long than code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh cong code snippets ) or ( long than code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh cong code snippets") or ("long than code snippets"))) or ("locating bug code snippets"))*.