Perhaps you should try some spelling variations:
"trinh tin cac snippets" » "trinh kinh cac snippets", "trinh toan cac snippets", "trinh tu cac snippets", "trinh ton cac snippets", "trinh tinh cach snippets", "trinh trinh cac snippets"
"dung dung cong snippets" » "duong dung cong snippets", "ung dung cong snippets", "dung ung cong snippets", "dung dung trong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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