Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
dong duong » tuong duong, cuong duong, dong thong
duong benh » duong binh, giuong benh, duong manh
hoc thieu » hoc hien
benh phan » benh nhan, benh phau, kenh phan
thong tu » phong tuc, thong tin, thong ke
phan dau » phan tu, hang dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (toc thieu)) tinh - thanh thong tu dong duong benh phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) tinh - thanh thong tu dong duong benh phan dau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) tinh - thanh thong tu dong duong benh phan dau*.