Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"rap den tran snippets" » "rap den tuan snippets", "rap den thanh snippets", "rap dang tran snippets", "cap den tran snippets", "ra den tran snippets", "cap dien tran snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("rap den tran snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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