Perhaps you should try some spelling variations:
"trinh duc con snippets" » "tinh duc con snippets", "trinh doc con snippets", "trinh dung con snippets", "trinh duc cong snippets", "trinh duc ton snippets", "trinh duc cuong snippets"
"dung ha code snippets" » "dung va code snippets", "dung he code snippets", "dung khoa code snippets", "dung ha core snippets"
"locating bug code snippets" » "locating bug core snippets", "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 duc con snippets") or ("dung ha code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh duc con snippets") OR ("dung ha code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh duc con snippets ) or ( dung ha code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh duc con snippets") or ("dung ha code snippets"))) or ("locating bug code snippets"))*.