Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"cua nhan lap snippets" » "ca nhan lap snippets", "cua ngan lap snippets", "cua nha lap snippets", "cua phan lap snippets", "cua thanh lap snippets", "cua nhan loai snippets", "cua nhan lap 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: (((("cua nhan lap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua nhan lap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua nhan lap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
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