Perhaps you should try some spelling variations:
"mau phieu phan tich so dung thuoc" » "mau lieu phan tich so dung thuoc", "mau hieu pham tich so dung thuoc", "mau phe phan tich so dung thuoc", "mau phieu phan tich so dung hoc", "mau chien phan tich so dung thuoc", "mau dieu phan tich so dung thuoc", "mau phieu phan tich bao dung thuoc", "mau phieu phan tinh son dung thuoc", "mau phieu phan tich su dung thuoc", "mau phieu phan tich hoc dung thuoc", "mau phieu phan tich noi dung thuoc"
"mau hieu phap tieng so dung thuoc" » "mau hieu phap tieng so dung hoc", "mau hien phap tieng so dung thuoc", "mau lieu phap tieng so dung thuoc", "mau hieu pham tieng so dung thuoc", "mau dieu phap tieng so dung thuoc", "thau hieu phap tieng so dung thuoc", "manh hieu phap tieng so dung thuoc", "mau hieu phap tieng o dung thuoc", "mau hieu phap tieng noi dung thuoc", "mau hieu phap tien bo dung thuoc", "mau hieu phap tieng su dung thuoc", "mau hieu phap tieng hoc dung thuoc"

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