Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hien hanh » dieu hanh
cua nhung » va nhung
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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 ((hien hanh) or (chieu sang)) - anh tang cua nhung ((cong dan) OR (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (chieu sang)) - anh tang cua nhung ((cong dan) OR (cong san)) than cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien hanh) or (chieu sang)) - anh tang cua nhung ((cong dan) OR (cong san)) than cau*".