Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"den can thuc snippets" » "den dan thuc snippets", "den van thuc snippets", "den cay thuc snippets", "den cac thuc snippets", "den cam thuc snippets", "dieu can thuc snippets", "den can thuc 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 can thuc 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 can thuc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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