Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap cao tan slippers" » "phap ca tan slippers", "phap cac tan slippers", "phap cai tan slippers", "phap cao tang slippers", "phap cao tai slippers", "phap cao van slippers", "phap cao tan slippery", "phap cao tan 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: (((("phap cao tan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap cao tan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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