Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trinh vat » trinh luat, sinh vat, trinh han
trinh van » trinh han, trinh quan, trinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan tap » toan 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 - hanh ((trinh vat) OR (trinh van)) nhung ((cong dan) OR (cong tan)) toan tap~.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh ((trinh vat) or (trinh van)) nhung ((cong dan) or (cong tan)) toan tap*.