Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
quan nhung » qua nhung, cua nhung, luan chung
nhung cong » dung cong, thong cong, hang cong
hien sach » dien sach, kien sach, thien hach
cong san » cong tac
quan cau » quang cao, toan cau, quan ha
tuan cu » tuan tu, quan cua, tuan thu

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 sach - ((hanh trinh) OR (canh tranh)) quan nhung cong san ((quan cau) OR (tuan cu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien sach - ((hanh trinh) OR (canh tranh)) quan nhung cong san ((quan cau) or (tuan cu))~".
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - ((hanh trinh) OR (canh tranh)) quan nhung cong san ((quan cau) or (tuan cu))*.