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