Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dung thu tan snippets" » "ung thu tan snippets", "dung phu tan snippets", "dung thi tan snippets", "dung thu tuan snippets", "dung thu ban snippets", "dung thu tin snippets"

Try widening your search to All Fields.

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