Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"don van thuc snippets" » "don va thuc snippets", "don dan thuc snippets", "don van thu snippets", "doan van thuc snippets", "dong van thuc snippets", "do van thuc snippets", "don van thuc 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 van thuc 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 van thuc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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