Perhaps you should try some spelling variations:
nhiet nang » nhiet dong, viet nang, thien nang
nhieu tang » chieu sang, hieu lang
hieu quang » thieu quang, hieu quan, hieu qua
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
cam nhung » cam hung, nam nhung, tham nhung
tung cam » dung cam, trung cap, tung pham
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((nhiet nang) OR (nhieu tang))) OR (hieu quang)) - thanh tung cam nhung cong dan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((nhiet nang) OR (nhieu tang))) or (hieu quang)) - thanh tung cam nhung cong dan toan ban~".
• Adding a wildcard symbol may retrieve word variants: hoc ((((nhiet nang) OR (nhieu tang))) or (hieu quang)) - thanh tung cam nhung cong dan toan ban*.