Perhaps you should try some spelling variations:
thanh trung » thanh tung
phuong cong » phuong dong, phong cong, phung cong
cua phuong » cuu phuong, cuc phuong, luan phuong
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
hoc hieu » hoc hien, doc hieu, hoc dieu
cong tan » cong tac, cong san, cong thanh
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (hoc thieu)) nganh - thanh trung cua phuong cong tan ((than cau) OR (toan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hieu) or (hoc thieu)) nganh - thanh trung cua phuong cong tan ((than cau) OR (toan cau))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) or (hoc thieu)) nganh - thanh trung cua phuong cong tan ((than cau) OR (toan cau))*.