Perhaps you should try some spelling variations:
tieng trung » truong trung
nhieu tang » chieu sang, nhiet nang
dung tieng » vung tieng, dung tien, rung thieng
trung dung » ung dung, trung uong, trinh dung
hieu lang » chieu sang, hieu quang, hieu van
hanh dang » hanh dong, anh dang, hanh dung
dang van » hoang van, hang va
van dung » van dong, xay dung, tin dung

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: doi ((nhieu tang) OR (hieu lang)) - hanh dang van dung tieng trung dung tai~.
• Adding a wildcard symbol may retrieve word variants: doi ((nhieu tang) or (hieu lang)) - hanh dang van dung tieng trung dung tai*.