Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cua nuoc lua snippets" » "cua quoc lua snippets", "cua nguoi lua snippets", "cua thuoc lua snippets", "cua nuoc luan snippets", "cua nuoc luat snippets", "cua nuoc cua snippets"

Try widening your search to All Fields.

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