Perhaps you should try some spelling variations:
"mau phieu phan trinh duc dung thuoc" » "mau lieu phan trinh duc dung thuoc", "mau hieu pham trinh duc dung thuoc", "mau phe phan trinh duc dung thuoc", "mau phieu thanh trinh duc dung thuoc", "mau phieu phan tich duc dung thuoc", "mau phieu hanh trinh duc dung thuoc", "mau phieu phan trinh duc dung hoc", "mau chien phan trinh duc dung thuoc", "mau dieu phan trinh duc dung thuoc", "mau phieu phan tinh duc dung thuoc", "mau phieu phan trinh doc dung thuoc", "mau phieu phan trinh dung dung thuoc", "mau phieu phan trinh duc hung thuoc", "mau phieu phan trinh duc cuong thuoc", "mau phieu phan trinh duc trung thuoc"
"thau hieu phap tich du dung thuoc" » "thau hieu phap tich du dung hoc", "thu hien phap tich du dung thuoc", "thuc hieu phap tich du dung thuoc", "phan hieu phap tich du dung thuoc", "thau hien phap tich du dung thuoc", "thau lieu phap tich du dung thuoc", "thau hieu pham tich du dung thuoc", "thau hieu phan tich du dung thuoc", "thau hieu phap tinh du dung thuoc", "thau hieu phap dich du dung thuoc", "thau hieu phap tich duy dung thuoc", "thau hieu phap tich su dung thuoc", "thau hieu phap tich cu dung thuoc"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("mau phieu phan trinh duc dung thuoc") or ("thau hieu phap tich du dung thuoc"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("mau phieu phan trinh duc dung thuoc") OR ("thau hieu phap tich du dung thuoc")).
• Removing quotes may allow a broader search: (( mau phieu phan trinh duc dung thuoc ) or ( thau hieu phap tich du dung thuoc )).
• Adding a wildcard symbol may retrieve word variants: (("mau phieu phan trinh duc dung thuoc") or ("thau hieu phap tich du dung thuoc"))*.