Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
thong cong » trong cong, thong thong, phong chong
hanh dong » anh dong, ha dong
tong cong » trong cong, cong cong, dung cong
nho hieu » nha hieu, nho sieu, nhu hieu
dong cho » dung cho, dong co, dong hoc
han tap » han tai, toan tap, nhan tai
san tay » ban tay, dan tay, han tay

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

• If you are trying to use Boolean operators, they must be ALL CAPS: nho hieu quang - hanh dong cho ((thong cong) OR (tong cong)) thanh ((han tap) OR (san tay))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nho hieu quang - hanh dong cho ((thong cong) OR (tong cong)) thanh ((han tap) or (san tay))~".
• Adding a wildcard symbol may retrieve word variants: nho hieu quang - hanh dong cho ((thong cong) OR (tong cong)) thanh ((han tap) or (san tay))*.