Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trung tin » trung tinh, trong tin, truong tinh
trang tin » trong tin, trang trinh, trang kien
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
phan cau » phan dau, phan cac, phan tu
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh ((trung tin) OR (trang tin)) dung cong san ((phan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh ((trung tin) OR (trang tin)) dung cong san ((phan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh ((trung tin) OR (trang tin)) dung cong san ((phan cau) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh ((trung tin) OR (trang tin)) dung cong san ((phan cau) or (toan tap))*.