Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dem hoc anh snippets" » "de hoc anh snippets", "dem hoi anh snippets", "den hoc anh snippets", "dem hoc nganh snippets", "dem hoc nhanh snippets", "dem hoc sinh snippets", "dem hoc anh 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: (((("dem hoc anh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dem hoc anh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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