Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khanh thu va snippets" » "nhanh thu va snippets", "thanh thu va snippets", "khanh thuan va snippets", "khanh thuc va snippets", "khanh thue va snippets", "khanh tu va snippets", "khanh thu va 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: (((("khanh thu va snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khanh thu va snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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