Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"juan cao thi slippers" » "quang cao thi slippers", "toan cao thi slippers", "quan cau thi slippers", "juan cau thi slippers", "juan cao tai slippers", "juan dao thi slippers", "juan cao thi slippery", "juan cao thi 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: (((("python using java snippets") or ("juan cao thi slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("juan cao thi slippers"))) OR ("locating bug code snippets")).
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