Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"son hoc dung snippets" » "son hoc ung snippets", "son hoc dan snippets", "son hoc cong snippets", "mon hoc dung snippets", "so hoc dung snippets", "son hoa dung snippets", "son hoc dung 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: (((("python using java snippets") or ("son hoc dung snippets"))) or ("locating bug code snippets"))~.
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