Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan van cho snippets" » "dan van code snippets", "dang van cho snippets", "doan van cho snippets", "dao van cho snippets", "dan van chi snippets", "dan san cho snippets", "dan van chat 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: (((("dan van cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan van cho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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