Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
doc hieu » toc thieu, hoc hien
ban cong » bang cong, van cong, phan cong
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van 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 thieu)) sang - hanh trinh cua ban cong san ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (hoc thieu)) sang - hanh trinh cua ban cong san ((toan cau) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (hoc thieu)) sang - hanh trinh cua ban cong san ((toan cau) or (toan ban))*.