Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khi hoc sinh snippets" » "khi hoi sinh snippets", "khien hoc sinh snippets", "khoa hoc sinh snippets", "khi hoc dinh snippets", "khi hoc minh snippets", "khi hoc kinh snippets", "khi hoc sinh 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: (((("khi hoc sinh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi hoc sinh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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