Perhaps you should try some spelling variations:
"python using raw snippets" » "python using real snippets", "python using a snippets", "python using low snippets", "python using raw slippers"
"dat dien trac snippets" » "dat dien trai snippets", "dat kien truc snippets", "dat dieu tra snippets", "vat dien trac snippets", "chat dien trac snippets", "doan dien trac snippets", "dat dien trac 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: (((("dat dien trac snippets") or ("python using raw snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat dien trac snippets") OR ("python using raw snippets"))) OR ("locating bug code snippets")).
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