Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"phi roi nuoc snippets" » "phi ruou nuoc snippets", "phi hoc nuoc snippets", "phi li nuoc snippets", "phi loi nuoc snippets", "phi doi nuoc snippets", "phi moi nuoc snippets", "phi roi nuoc 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: (((("phi roi nuoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi roi nuoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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