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