Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"chon doi dan snippets" » "cho doi dan snippets", "chon gioi dan snippets", "chong doc dan snippets", "chon hoi dan snippets", "chon doi ban snippets", "chon doi dau snippets"

Try widening your search to All Fields.

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