Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
thanh trung » thanh tung
cua phuong » cuu phuong, cuc phuong, luan phuong
trung cua » truong cua, trung tuan, trung cap
hoc hiem » hoc thieu, hoc thiet, hoc nhiet
cong dan » cong san, cong tan, huong dan
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 hiem) OR (hoc hien)) ngan - thanh trung cua phuong cong dan ((than cau) OR (toan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hiem) OR (hoc hien)) ngan - thanh trung cua phuong cong dan ((than cau) or (toan cau))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc hiem) OR (hoc hien)) ngan - thanh trung cua phuong cong dan ((than cau) or (toan cau))*.