Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duong va cao snippets" » "duong va code snippets", "duong van cao snippets", "dung va cao snippets", "luong va cao snippets", "duong va cac snippets", "duong va co snippets", "duong va dao 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: (((("duong va cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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