Perhaps you should try some spelling variations:
nhiet nang » nhiet dong, viet nang, nhieu tang
thanh tung » thanh cong
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
tung cua » trung cua, tuong cua, dung cua
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap
tra cau » tra sau, ta cau, tra cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (nhiet nang)) - thanh tung cua dung cong tan ((tra cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhiet nang)) - thanh tung cua dung cong tan ((tra cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (nhiet nang)) - thanh tung cua dung cong tan ((tra cau) or (toan cau))*.