Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"trinh he duc snippets" » "trinh han duc snippets", "trinh hoa duc snippets", "trinh ky duc snippets", "trinh le duc snippets", "trinh ho duc snippets", "trinh ve duc snippets", "trinh he 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: (((("trinh he 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: (((("trinh he duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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