Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"khoa hoi lua snippets" » "khoan hoi lua snippets", "khoa hoc lua snippets", "khoa doi lua snippets", "khoa hoi luan snippets", "khoa hoi luat snippets", "khoa hoi cua snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("khoa hoi lua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa hoi lua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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