Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
phan cong » thanh cong
hoc tien » hoc tieng, hoc hien, hoc vien
cua phan » cua nhan, cua phap, cua han
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tien thinh - ((hanh tranh) or (hanh trinh)) cua phan cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tien thinh - ((hanh tranh) OR (hanh trinh)) cua phan cong tan than cau*.