Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
chinh tai » chinh tri
ho chieu » theo chieu, hoc thieu, doi chieu
chinh ta » chinh va, chinh tri
cong san » cong tac
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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: ho chieu sang - hanh ((chinh ta) OR (chinh tai)) nhung cong san ((than cau) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh ((chinh ta) OR (chinh tai)) nhung cong san ((than cau) or (than cap))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh ((chinh ta) OR (chinh tai)) nhung cong san ((than cau) or (than cap))*.