Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"den vi thuc snippets" » "den vi thuoc snippets", "den va thuc snippets", "den ve thuc snippets", "den vai thuc snippets", "den voi thuc snippets", "don vi thuc snippets", "den vi thuc slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("den vi thuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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