Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"den nhat anh snippets" » "dien nhat anh snippets", "dang nhat anh snippets", "dung nhat anh snippets", "den nhat hanh snippets", "den nhat minh snippets", "den nhat ban snippets", "den nhat anh 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: (((("den nhat anh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den nhat anh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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