Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan dan cho snippets" » "dan dan code snippets", "dang dan cho snippets", "ban dan cho snippets", "dao dan cho snippets", "dan danh cho snippets", "dan san cho snippets", "dan dac cho 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 dan 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 dan cho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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