Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khan dam tra snippets" » "thanh dam tra snippets", "chang dam tra snippets", "khanh nam tra snippets", "khan dam trao snippets", "khan dan tra snippets", "khan nam tra snippets", "khan dam tra 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: (((("python using java snippets") or ("khan dam tra snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("khan dam tra snippets"))) OR ("locating bug code snippets")).
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