Perhaps you should try some spelling variations:
"trinh chao thi snippets" » "trinh chat thi snippets", "trinh han thi snippets", "trinh co thi snippets", "trinh cao thi snippets", "trinh chai thoi snippets", "trinh pham thi snippets", "trinh chao thi slippers"
"dung trong code snippets" » "dung trong cong snippets", "dung trong co snippets", "dung trong che snippets", "dung trong 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 chao thi snippets") or ("dung trong code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh chao thi snippets") OR ("dung trong code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh chao thi snippets ) or ( dung trong code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh chao thi snippets") or ("dung trong code snippets"))) or ("locating bug code snippets"))*.