Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"khoa doi lua snippets" » "hoa doi lua snippets", "khoa hoi lua snippets", "khoa noi lua snippets", "khoa doi cua snippets", "khoa doi xua snippets", "khoa toi lua snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("khoa doi 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 doi lua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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