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
van phong » van dong, hai phong
ho thiet » hoc thiet, hoa thiet, hoc thieu
so thiet » soc thiet, hoc thiet, hoa thiet
van phan » van thanh, luan phan, van ban

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 ((van phan) OR (van phong)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho thiet) OR (so thiet)) tach - thanh trung cua nhung cong ((van phan) OR (van phong)) cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho thiet) or (so thiet)) tach - thanh trung cua nhung cong ((van phan) OR (van phong)) cac".
• Adding a wildcard symbol may retrieve word variants: ((ho thiet) or (so thiet)) tach - thanh trung cua nhung cong ((van phan) OR (van phong)) cac*.