Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
luan dong » luan cong, quan dong, luan nong
dong cong » duong cong, dung cong, dang cong
hanh han » hanh nhan, hanh phan, hanh san
han luan » hang luan, nhan luan, dan luan
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu quang - hanh han luan dong cong san ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quang - hanh han luan dong cong san ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - hanh han luan dong cong san ((toan cau) or (toan ban))*.