Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
ho thiet » hoc thiet, hoa thiet, hoc thieu
so thiet » soc thiet, hoc thiet, hoa thiet
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
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: ((ho thiet) or (so thiet)) tach - thanh trung cua nhung cong tac phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho thiet) OR (so thiet)) tach - thanh trung cua nhung cong tac phan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho thiet) or (so thiet)) tach - thanh trung cua nhung cong tac phan cau*.