Perhaps you should try some spelling variations:
"lan thu duc snippets" » "lan thu tuc snippets", "lan tho duc snippets", "lan thu muc snippets", "van thu duc snippets", "luan thuc duc snippets", "dan thuc duc snippets", "lan thu duc 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 ("lan thu duc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using a snippets") OR ("lan thu duc snippets"))) OR ("locating bug code snippets")).
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