Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
trinh quan » tinh quang, trinh han
dang trong » dung trong, dong trong, lang trong
hoc thieu » toc thieu, hoc hien
cong toan » cong tan, cong hoan, cong tuan
toan ban » van ban
luat » luan, xuat

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 quang - hanh ((trinh luat) OR (trinh quan)) dang trong cong toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - hanh ((trinh luat) or (trinh quan)) dang trong cong toan ban*.