Perhaps you should try some spelling variations:
trinh tinh » trinh kinh, trinh tin, trinh sinh
trinh dinh » trinh kinh, trinh sinh, trinh dung
hang cong » dang cong, hang nong, bang cong
tinh cua » trinh cua, sinh cua, tinh chat
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
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: doi ((trinh tinh) OR (trinh dinh)) - hanh ((trinh luat) OR (tinh cua)) hang cong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((trinh tinh) OR (trinh dinh)) - hanh ((trinh luat) or (tinh cua)) hang cong dan than cau~".
• Adding a wildcard symbol may retrieve word variants: doi ((trinh tinh) OR (trinh dinh)) - hanh ((trinh luat) or (tinh cua)) hang cong dan than cau*.