Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
chieu sang » chieu sach, chieu xanh, hieu lang
anh truong » manh truong, anh thuong, anh trong
truong cua » truong ca, truong quan, truong cao
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (thieu quang)) - anh truong cua dung ((cong dan) OR (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (thieu quang)) - anh truong cua dung ((cong dan) OR (cong tan)) than cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (thieu quang)) - anh truong cua dung ((cong dan) OR (cong tan)) than cau*".