Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan van mon snippets" » "phan van code snippets", "pham van mon snippets", "thanh van mon snippets", "luan van mon snippets", "phan dan mon snippets", "phan van bon snippets", "phan van man 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 mon snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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