Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"chun hoc vat snippets" » "chung hoc vat snippets", "chun ho vat snippets", "chuan hoa vat snippets", "chun hoc va snippets", "chun hoc viet snippets", "chun thuc vat snippets", "chun hoc vat 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: (((("chun hoc vat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chun hoc vat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chun hoc vat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
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