Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"van tran tro snippets" » "van trang tro snippets", "van tranh tro snippets", "van tuan tro snippets", "van tran troi snippets", "van tran tri snippets", "van tran trong snippets"

Try widening your search to All Fields.

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