Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » chieu sang, hieu quang, nhieu tang
hanh dung » thanh dung, anh dung, hanh dong
cua thong » cua thuong, cua khong, cua tong
dung cua » dung luan, dung cho
ho hieu » ho chieu, hoi hieu, nho hieu
han tap » han tai, toan tap, nhan tai
san tay » dan tay, han tay, van tay
ban tay » ban tai, ban than, gian 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: ho hieu lang - hanh dung cua thong cong thanh ((han tap) OR (((san tay) OR (ban tay))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - hanh dung cua thong cong thanh ((han tap) or (((san tay) OR (ban tay))))~".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh dung cua thong cong thanh ((han tap) or (((san tay) OR (ban tay))))*.