Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phat vi cay snippets" » "phat voi cay snippets", "phat va cay snippets", "phat si cay snippets", "phan vi cay snippets", "pham vi cay snippets", "phap vi cay snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("phat vi cay snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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