Perhaps you should try some spelling variations:
hoc thieu » hoc hien
cong dung » cuong dung, cong dong, cong luong
dung benh » duong benh, dung menh, trung benh
benh phan » benh nhan, benh phau, kenh phan
cong cac » cuong cac, cong tac, cong cau
cac cong » cua cong
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 cong cac cong dung benh phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) tinh - thanh cong cac cong dung benh phan dau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) tinh - thanh cong cac cong dung benh phan dau*.