Perhaps you should try some spelling variations:
"trinh chat thom snippets" » "tinh chat thom snippets", "trinh luat thom snippets", "trinh han thom snippets", "trinh chat thai snippets", "trinh chat hoa snippets", "trinh chat cho snippets", "trinh chat thom slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

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