Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi thu benh slippers" » "phi tru benh slippers", "phi thu binh slippers", "phi chua benh slippers", "phai thu benh slippers", "thi thu benh slippers", "phi thi benh slippers", "phi thu benh slippery", "phi thu benh 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: (((("phi thu benh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi thu benh slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("phi thu benh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.