Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan van che snippets" » "phan van code snippets", "pham van che snippets", "thanh van che snippets", "luan van che snippets", "phan han che snippets", "phan van chi snippets", "phan van 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: (((("phan van che snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan van che snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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