Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"don ban dung snippets" » "don van dung snippets", "don dan dung snippets", "don lan dung snippets", "dong ban dung snippets", "do ban dung snippets", "doi ban dung snippets", "don ban dung 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: (((("don ban dung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("don ban dung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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