Perhaps you should try some spelling variations:
hoc thieu » hoc hien
cong hung » cong chung, cong huong, cong dung
hung benh » phong benh, khang benh, duong benh
benh phan » benh nhan, benh phau, kenh phan
cong cao » cong cau, cong cac, cong co
cao cong » cac cong, cao dang, 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 cao cong hung benh phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) tinh - thanh cong cao cong hung benh phan dau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) tinh - thanh cong cao cong hung benh phan dau*.