Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
phan cang » phan cong, phan dang, phan cung
cang luan » tang luan, hang luan, cong luan
luan cong » luat cong, luong cong, luan chung
cong manh » cong danh, duong manh, cong thanh
cong tan » cong tac, cong san, cong thanh
toan ban » van ban

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)) - phan cang luan cong ((cong manh) or (cong tan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu manh) OR (chieu sang)) - phan cang luan cong ((cong manh) OR (cong tan)) toan ban.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu manh) or (chieu sang)) - phan cang luan cong ((cong manh) or (cong tan)) toan ban*.