Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thanh chau » thanh cha, thanh cham, thanh chu
hien tach » thien hach, chiet tach, vien bach
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tach - thanh ((trung cua) OR (trung cap)) nhung cong tan ((thanh chau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tach - thanh ((trung cua) OR (trung cap)) nhung cong tan ((thanh chau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien tach - thanh ((trung cua) OR (trung cap)) nhung cong tan ((thanh chau) or (phan cau))".
• Adding a wildcard symbol may retrieve word variants: hoc hien tach - thanh ((trung cua) OR (trung cap)) nhung cong tan ((thanh chau) or (phan cau))*.