Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung toan » truong toan, trung tuan, trung tran
thong cong » trong cong, tong cong, thong thong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, than cap
phan dau » hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh trung toan thong cong dan ((((than cau) or (phan tu))) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung toan thong cong dan ((((than cau) OR (phan tu))) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung toan thong cong dan ((((than cau) or (phan tu))) or (phan dau))*.