Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trung » hanh trang, manh trung, danh trung
doi chieu » doc hieu, doi chi, ho chieu
ung cong » dung cong, luong cong, duong cong
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 trung) or (thanh trung)) dap ung cong dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((hanh trung) OR (thanh trung)) dap ung cong dan ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - ((hanh trung) or (thanh trung)) dap ung cong dan ((toan cau) or (toan ban))*.