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 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 - anh tang cua nhung cong dan ((toan cau) or (((toan tap) OR (toan ban))))~.
• 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) OR (toan ban)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu quang - anh tang cua nhung cong dan ((toan cau) or (((toan tap) OR (toan ban))))".
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - anh tang cua nhung cong dan ((toan cau) or (((toan tap) OR (toan ban))))*.