Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
hanh tran » hanh trang, thanh tran, hanh tram
van thong » van thuong, van phong, va thong
tran van » luan van
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.

• Performing a fuzzy search may retrieve terms with similar spellings: cua ((chieu xanh) or (chieu sach)) - hanh tran van thong cong san ((than cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cua ((chieu xanh) OR (chieu sach)) - hanh tran van thong cong san ((than cau) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: cua ((chieu xanh) or (chieu sach)) - hanh tran van thong cong san ((than cau) or (than cap))*.