Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu hoai cuu snippets" » "thi hoai cuu snippets", "thu hai cuu snippets", "thu hoan cuu snippets", "thu hoi cua snippets", "thu hoa cua snippets", "thu hoai thu 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: (((("python using java snippets") or ("thu hoai cuu snippets"))) or ("locating bug code snippets"))~.
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