Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhieu tang » chieu sang, hieu lang, nhiet nang
trung cua » truong cua, trung tuan, trung cap
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cau » toan cao, toan ban, toan tap
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((diep tinh) or (nhieu tang)) - thanh trung cua cong ((cong tan) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((diep tinh) OR (nhieu tang)) - thanh trung cua cong ((cong tan) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: toc ((diep tinh) or (nhieu tang)) - thanh trung cua cong ((cong tan) or (cong san)) toan cau*.