Perhaps you should try some spelling variations:
trang trinh » tra trinh, trang tri, thanh trinh
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
trang tin » trong tin, trung tin, trang kien
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
than ban » thanh ban, toan ban, nhuan ban
than man » than ma, thanh san, tran manh

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: doi chieu sang - hanh ((trang tin) OR (trang trinh)) dung cong dan ((than ban) OR (than man))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - hanh ((trang tin) or (trang trinh)) dung cong dan ((than ban) OR (than man))~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh ((trang tin) or (trang trinh)) dung cong dan ((than ban) OR (than man))*.