Perhaps you should try some spelling variations:
thanh trung » thanh tung
cong thanh » dong thanh, cong trinh, truong thanh
tieu tinh » trieu tinh, tieu trinh, lieu tinh
trung dam » trung tam, trung dai, trong dam
dam khung » dai khung, cam hung, cam nhung
cong tan » cong tac, cong san, cong ty
san cau » van cau, ban cau, can cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu tinh - thanh trung dam khung ((cong thanh) OR (cong tan)) san cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - thanh trung dam khung ((cong thanh) OR (cong tan)) san cau".
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - thanh trung dam khung ((cong thanh) OR (cong tan)) san cau*.