Perhaps you should try some spelling variations:
luat trong » suat trong, thuat trong, luat thuong
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
canh tinh » hanh tinh, manh tinh, canh tranh
tinh luat » trinh luat, hinh luat, trinh luan
chinh cau » chinh chau, chinh ca, chinh can
cong tan » cong tac, cong san, cong thanh
chan cau » phan cau, can cau, nhanh cau

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: theo ((hieu manh) OR (chieu sang)) - canh tinh luat trong cong tan ((chan cau) OR (chinh cau))~.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu sang)) - canh tinh luat trong cong tan ((chan cau) or (chinh cau))*.