Perhaps you should try some spelling variations:
"doc thuc phan snippets" » "doc thuc pham snippets", "doc thu phan snippets", "doc thuc chan snippets", "hoc thuc phan snippets", "do thuc phan snippets", "hoc thuoc phan snippets", "doc thuc phan slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using a snippets") or ("doc thuc phan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using a snippets") OR ("doc thuc phan snippets"))) OR ("locating bug code snippets")).
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