Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
hanh vai » hanh vi, hanh tai, hanh van
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan
hanh va » hang va, hanh vi

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 - hanh ((hanh va) OR (hanh vai)) nhung cong ((van toan) OR (van tuan)) cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((hanh va) or (hanh vai)) nhung cong ((van toan) or (van tuan)) cau*.