Perhaps you should try some spelling variations:
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"
"cua dai han slippers" » "cua dan han slippers", "cua dang han slippers", "cua dai phan slippers", "cua dai nhan slippers", "cua dai hanh slippers", "cua dai han slippery", "cua dai han grippers"
"locating bug code snippets" » "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: (((("cua dai han slippers") or ("python using data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua dai han slippers") OR ("python using data snippets"))) OR ("locating bug code snippets")).
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