Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"phi cong lin snippets" » "thi cong lin snippets", "phan cong lin snippets", "pham cong lin snippets", "phi cong ling snippets", "phi cong linh snippets", "phi cong li snippets", "phi cong lin 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 cong lin 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 cong lin snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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