Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhieu tang » chieu sang, hieu lang
nhiet nang » nhiet dong, viet nang, thien nang
trung tuan » trung thanh, trung tam, tran tuan
tuan dung » tuan duong, tran dung, tan dung
dung tong » dung trong, dung thong, dung cong
tap toan » tap doan, bai toan
tap quan » tac quan, hai quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((nhieu tang) or (nhiet nang)) - thanh trung tuan dung tong ((tap toan) OR (tap quan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((nhieu tang) OR (nhiet nang)) - thanh trung tuan dung tong ((tap toan) OR (tap quan)) cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((nhieu tang) or (nhiet nang)) - thanh trung tuan dung tong ((tap toan) OR (tap quan)) cao*".