Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu quang » thieu quang, hieu quan, hieu qua
cua nhung » va nhung
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
toan tap » toan 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 - anh tang cua nhung cong dan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quang - anh tang cua nhung cong dan ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - anh tang cua nhung cong dan ((toan cau) or (toan tap))*.