Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"lua thu hang snippets" » "lua thi hang snippets", "lua thuc hanh snippets", "lua thu huong snippets", "luat thu hang snippets", "luan thu hang snippets", "mua thu hang snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("lua thu hang snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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