Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc cac khoi slippers" » "toc cac thoi slippers", "toc cac khoan slippers", "toc cach thoi slippers", "hoc cac khoi slippers", "tuc cac khoi slippers", "ton cac khoi slippers", "toc cac khoi slippery", "toc cac khoi grippers"
"locating bug code snippets" » "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: (((("toc cac khoi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc cac khoi slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc cac khoi slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc cac khoi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.