Perhaps you should try some spelling variations:
trinh luan » trinh luat, trinh quan, trinh han
hanh trinh » canh tranh, hanh chinh
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
doc hieu » toc thieu, hoc thieu
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
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: ((doc hieu) OR (hoc hien)) manh - hanh trinh luan chung cong dan ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (hoc hien)) manh - hanh trinh luan chung cong dan ((toan cau) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (hoc hien)) manh - hanh trinh luan chung cong dan ((toan cau) or (toan tap))*.