Perhaps you should try some spelling variations:
thien thanh » thi thanh, hien hanh, chien tranh
thanh trung » thanh tung
tien thanh » tien thinh, tran thanh, den thanh
trung cua » truong cua, trung tuan, trung cap
tong cong » trong cong, cong cong, dung cong
cua tong » cua cong, cua dong, cua nong
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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

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