Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
trinh cua » trinh luat, trinh luan, trinh chat
tinh cua » sinh cua, tinh chat, tranh cua
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan ban

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 hien xanh - hanh ((((trinh cua) OR (tinh cua))) OR (trinh quan)) nhung cong san toan tap~.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((((trinh cua) or (tinh cua))) or (trinh quan)) nhung cong san toan tap*.