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 tich hoc dan thuoc" » "mau hien phap tich hoc dan thuoc", "mau lieu phap tich hoc dan thuoc", "mau hieu pham tich hoc dan thuoc", "mau hieu phap tinh hoc dan thuoc", "mau hieu phap dich hoc dan thuoc", "mau hieu phap sinh hoc dan thuoc", "mau hieu phap tich hoc dang thuoc", "mau hieu phap tich hoc dan thuc", "mau hieu phap tich hoc ban thuoc", "mau dieu phap tich hoc dan thuoc", "thau hieu phap tich hoc dan thuoc", "manh hieu phap tich hoc dan thuoc", "mau hieu phap tich hop dan 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 tich hoc dan 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 tich hoc dan thuoc")).
• Removing quotes may allow a broader search: (( mau phieu phan tich so dung thuoc ) or ( mau hieu phap tich hoc dan thuoc )).
• Adding a wildcard symbol may retrieve word variants: (("mau phieu phan tich so dung thuoc") or ("mau hieu phap tich hoc dan thuoc"))*.