Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trung thi » truong thi, trung tri, trung tai
trong thi » trong thoi, trong thu, trong tho
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau
con tan » con than, con tap, con ban

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 - thanh ((trung thi) OR (trong thi)) thuong ((con tan) OR (cong tan)) tran cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh ((trung thi) OR (trong thi)) thuong ((con tan) or (cong tan)) tran cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh ((trung thi) OR (trong thi)) thuong ((con tan) or (cong tan)) tran cau*.