Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"minh so tan snippets" » "minh son tan snippets", "dinh so tan snippets", "hinh so tan snippets", "minh so than snippets", "minh so toan snippets", "minh so tay snippets", "minh so tan 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: (((("minh so tan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("minh so tan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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