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
tdung cua » trung cua, truong cua, thong cua
thuan cam » thuat cam, thuat dam, khoan cam
dung cua » dung luan, dung cho
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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 - thanh ((tdung cua) or (dung cua)) thong cong san ((thuan cam) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh ((tdung cua) OR (dung cua)) thong cong san ((thuan cam) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh ((tdung cua) or (dung cua)) thong cong san ((thuan cam) or (toan cau))*.