Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"den hoc khi snippets" » "dien hoc khi snippets", "dan hoc khi snippets", "de hoc khi snippets", "den hoc khoi snippets", "den hoc khia snippets", "den hoc ki snippets", "den hoc khi 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 ("den hoc khi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("den hoc khi snippets"))) OR ("locating bug code snippets")).
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