Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
nhung dung » phuong dung, ung dung, thong dung
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
dung danh » dung doanh, dung dan, cuong danh
cong cua » cong cu, dong cua, huong cua
tuan thu » toan thuc, van thu
than tu » thanh tu, thang tu, phan tu

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: hoc thieu sang - thanh cong cua nhung dung danh ((than tu) OR (tuan thu))~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh cong cua nhung dung danh ((than tu) or (tuan thu))*.