Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhieu tang » chieu sang, nhiet nang
trung tuan » trung thanh, trung tam, tran tuan
hieu lang » chieu sang, hieu quang, hieu van
tuan dung » tuan duong, tran dung, tan dung
dung cong » dung trong
cong ban » cong bang, cong san, cong tan
than cau » toan cau, phan cau, than cap
toan ban » 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: doi ((hieu lang) OR (nhieu tang)) - thanh trung tuan dung cong ban ((than cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (nhieu tang)) - thanh trung tuan dung cong ban ((than cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu lang) OR (nhieu tang)) - thanh trung tuan dung cong ban ((than cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) OR (nhieu tang)) - thanh trung tuan dung cong ban ((than cau) or (toan ban))*.