Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
nang cong » nang song, dang cong, bang cong
tinh cua » trinh cua, sinh cua, tinh chat
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
hoc cuu » hoc huu, hoc cua, hoc cau

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 cuu tinh - hanh ((trinh quan) OR (tinh cua)) nang cong dan toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc cuu tinh - hanh ((trinh quan) or (tinh cua)) nang cong dan toan cau*.