Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ban ham sach snippets" » "ban pham sach snippets", "ban nam sach snippets", "ban lam sach snippets", "ba ham sach snippets", "ban hang sach snippets", "ban hanh sach snippets", "ban ham sach 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: (((("ban ham sach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban ham sach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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