Perhaps you should try some spelling variations:
"trinh tra thuc snippets" » "trinh ra thuc snippets", "trinh tro thuc snippets", "trinh tru thuc snippets", "trinh tri thuc snippets", "trinh trang thuc snippets", "trinh toan thuc snippets", "trinh tra thuc slippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug code slippers", "dung bug core snippets"
"locating bug code snippets" » "locating bug code slippers", "locating bug core snippets"

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