Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung viet va slippers" » "nang viet va slippers", "cong viet va slippers", "mang viet va slippers", "dung viet van slippers", "dung viet ha slippers", "dung tiet va slippers", "dung viet va slippery", "dung viet va 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: (((("dung viet va slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung viet va slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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