Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"sach lo tang snippets" » "sach dao tang snippets", "sach doi tang snippets", "sach hoi tang snippets", "sach le tang snippets", "sach do tang snippets", "sach lo tan snippets", "sach lo tang 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: (((("sach lo tang snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sach lo tang snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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