Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"chen hoc duc snippets" » "khien hoc duc snippets", "chung hoc duc snippets", "cho hoc duc snippets", "chen hoc duoc snippets", "chen hoc nuoc snippets", "chen hoc thuc snippets", "chen hoc duc 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: (((("chen hoc duc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chen hoc duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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