Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"cao doi 2010 snippets" » "cao doi 2018 snippets", "cao doi 2012 snippets", "cao doi 2013 snippets", "cho doi 2010 snippets", "cau doi 2010 snippets", "cac doi 2010 snippets", "cao doi 2010 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: (((("cao doi 2010 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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