Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khu den thuc snippets" » "khu dan thuc snippets", "khu kien thuc snippets", "khu diem thuc snippets", "thu dien thuc snippets", "khu doan thuc snippets", "phu dien thuc snippets", "khu den 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: (((("khu den 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: (((("khu den thuc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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