Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thuyet » hoc chuyen
trung cua » truong cua, trung tuan, trung cap
tong cong » trong cong, cong cong, dung cong
tran tuan » tran xuan, tran quang, tran thanh
ho chiet » ho chieu, ho thiet, hoc thiet
cua tong » cua cong, cua dong, cua nong
cong tan » cong tac, cong san, cong thanh
tran tan » tran van, tran thanh, trang tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chiet) or (hoc thuyet)) tach - thanh trung cua tong cong tan ((tran tuan) or (tran tan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chiet) OR (hoc thuyet)) tach - thanh trung cua tong cong tan ((tran tuan) OR (tran tan)).
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) or (hoc thuyet)) tach - thanh trung cua tong cong tan ((tran tuan) or (tran tan))*.