Perhaps you should try some spelling variations:
thanh trung » thanh tung
toan thiet » hoan thien, luan thiet, toan tien
nhung cong » dung cong, thong cong, hang cong
trung cap » truong cao, trung tam
cap nhung » cam nhung, vap nhung, dap nhung
cong dan » cong san, cong tan, huong dan
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toan thiet) or (hoa viet)) tach - thanh trung cap nhung cong dan ((than cap) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toan thiet) OR (hoa viet)) tach - thanh trung cap nhung cong dan ((than cap) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: ((toan thiet) or (hoa viet)) tach - thanh trung cap nhung cong dan ((than cap) or (phan tu))*.