Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cap » truong cao, trung tam
cap thong » cap tong, chap thuong, phap thong
cong dang » cong dong, cong dan, cong dung
tran chau » tranh chap, tran huu
tran cau » toan cau, ran cau, tra cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu manh) or (chieu sang)) - thanh trung cap thong cong dang ((tran cau) OR (tran chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu manh) OR (chieu sang)) - thanh trung cap thong cong dang ((tran cau) OR (tran chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu manh) or (chieu sang)) - thanh trung cap thong cong dang ((tran cau) OR (tran chau))".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu manh) or (chieu sang)) - thanh trung cap thong cong dang ((tran cau) OR (tran chau))*.