Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
quang dong » quang dung, quan dong, quang cuong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hien hanh » dieu hanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
dong cong » duong cong, dung cong, dang cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
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 ((((hieu manh) or (hien hanh))) or (chieu sang)) - hanh tinh quang dong cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hieu manh) OR (hien hanh))) OR (chieu sang)) - hanh tinh quang dong cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hieu manh) or (hien hanh))) or (chieu sang)) - hanh tinh quang dong cong dan than cau*.