Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chu sang » chu bang, thu sang, chieu sang
trung va » truong va, trung ha, trung tam
trang va » tran van, hang va
cong san » cong tac
than cao » thai cao, than cap, than sao
toan cao » toan ban, toan tap
cua chu » sua chua

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: cua chu sang - thanh ((trung va) OR (trang va)) nhung cong san ((than cao) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cua chu sang - thanh ((trung va) or (trang va)) nhung cong san ((than cao) OR (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: cua chu sang - thanh ((trung va) or (trang va)) nhung cong san ((than cao) OR (toan cao))*.