Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
tang luan » dung luan
trung cua » truong cua, trung tuan, trung cap
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
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 chieu sang - hanh ((tang luan) or (trung cua)) thong cong dan ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - hanh ((tang luan) OR (trung cua)) thong cong dan ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - hanh ((tang luan) or (trung cua)) thong cong dan ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh ((tang luan) or (trung cua)) thong cong dan ((toan cau) OR (toan ban))*.