Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc tang ca snippets" » "duc tang code snippets", "duc thang ca snippets", "duc tan ca snippets", "tuc tang ca snippets", "duc tang cua snippets", "duc hang ca snippets", "duc tang ma snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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