Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khoan lan wu snippets" » "khoai lang wu snippets", "khoan danh wu snippets", "khoan quan wu snippets", "khoan can wu snippets", "khoan fan wu snippets", "khoan lin wu snippets", "khoan lan wu 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: (((("khoan lan wu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoan lan wu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("khoan lan wu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.