Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"trinh he can snippets" » "trinh han can snippets", "trinh hoa can snippets", "trinh ky can snippets", "trinh he dan snippets", "trinh he van snippets", "trinh he cac snippets"
"dung cac code snippets" » "luong cac code snippets", "dung cho code snippets", "dung tai code snippets", "dung cac cong snippets", "dung cac co snippets", "dung cac che snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh he can snippets") or ("dung cac code snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh he can snippets") OR ("dung cac code snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( trinh he can snippets ) or ( dung cac code snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh he can snippets") or ("dung cac code snippets"))) or ("locating bugs code snippets"))*.