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 hieu phap 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 phieu phan tich tac dung thuoc" » "mau lieu phan tich tac dung thuoc", "mau hieu pham tich tac dung thuoc", "mau hieu phap tich tac dung thuoc", "mau phieu phan tich tac dung hoc", "mau chien phan tich tac dung thuoc", "mau dieu phan tich tac dung thuoc", "mau phieu phan tich cac dung thuoc", "mau phieu phan tich tai dung thuoc", "mau phieu phan tich sac dung thuoc", "mau phieu phan tich sach dung thuoc", "mau phieu phan tich xay dung thuoc", "mau phieu phan tich tin 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 phieu phan tich tac dung thuoc"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("mau phieu phan tich so dung thuoc") OR ("mau phieu phan tich tac dung thuoc")).
• Removing quotes may allow a broader search: (( mau phieu phan tich so dung thuoc ) or ( mau phieu phan tich tac dung thuoc )).
• Adding a wildcard symbol may retrieve word variants: (("mau phieu phan tich so dung thuoc") or ("mau phieu phan tich tac dung thuoc"))*.