Perhaps you should try some spelling variations:
"mau hieu phap tich so dung thuoc" » "mau hieu phap tich so dung hoc", "mau hien phap tich so dung thuoc", "mau lieu phap tich so dung thuoc", "mau hieu pham tich so dung thuoc", "mau hieu phap tinh so dung thuoc", "mau hieu phap dich so dung thuoc", "mau hieu phap sinh so dung thuoc", "mau dieu phap tich so dung thuoc", "thau hieu phap tich so dung thuoc", "manh hieu phap tich so dung thuoc", "mau hieu phap tich bao dung thuoc", "mau hieu phap tinh son dung thuoc", "mau hieu phap tich su dung thuoc", "mau hieu phap tich noi dung thuoc"
"mau phieu phan tich hoc dung thuoc" » "mau phieu phan tich hoc dung hoc", "mau lieu phan tich hoc dung thuoc", "mau hieu pham tich hoc dung thuoc", "mau phe phan tich hoc dung thuoc", "mau chien phan tich hoc dung thuoc", "mau dieu phan tich hoc dung thuoc", "mau phieu phan tinh hoc dung thuoc", "mau phieu phan dich hoc dung thuoc", "mau phieu phan tich hop dung thuoc", "mau phieu phan tich hoc ung thuoc", "mau phieu phan tich hoc dan thuoc", "mau phieu phan tich tac dung thuoc"

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