Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
cong dang » cong dong, cong dung, cong danh
anh nang » ganh nang, anh bang, anh dang
nang dua » nang du, nang suat, nang quan
dua dong » cua dong, duc dong, duy dong
cong dan » cong san, cong tan, huong dan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sang - anh nang dua dong ((cong dang) or (cong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - anh nang dua dong ((cong dang) OR (cong dan)) toan cao*.