Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"trinh cao hoc snippets" » "trinh chao hoc snippets", "trinh co hoc snippets", "trinh cau hoc snippets", "trinh cho hoc snippets", "trinh chat hoc 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 cao hoc 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 cao hoc snippets") OR ("dung cac code snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( trinh cao hoc snippets ) or ( dung cac code snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh cao hoc snippets") or ("dung cac code snippets"))) or ("locating bugs code snippets"))*.