Perhaps you should try some spelling variations:
"trong mach code snippets" » "trong cac code snippets", "trong minh code snippets", "trong anh code snippets", "trong mach core snippets"
"dung cac chat snippets" » "luong cac chat snippets", "dung cho chat snippets", "dung tai chat snippets", "dung cao chat snippets", "dung cac thuat snippets", "dung cac nha snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trong mach code snippets") or ("dung cac chat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong mach code snippets") OR ("dung cac chat snippets"))) OR ("locating bug code snippets")).
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