Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"bao tin sach snippets" » "bao tinh sach snippets", "bao tinh cach snippets", "bao dien sach snippets", "bao ton sach snippets", "bao thien sach snippets", "dao tinh sach snippets", "bao tin 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: (((("bao tin 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: (((("bao tin sach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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