Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"trinh van tran snippets" » "trinh han tran snippets", "trinh quan tran snippets", "trinh toan tran snippets", "trinh van trang snippets", "trinh van tranh snippets", "trinh van tuan snippets", "trinh van tran slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho code slippers"

Try widening your search to All Fields.

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