Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
doc hieu » hoc thieu, hoc hien
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.

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc thieu) or (doc hieu)) xanh - hanh trinh cua nhung cong san ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc thieu) OR (doc hieu)) xanh - hanh trinh cua nhung cong san ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((toc thieu) or (doc hieu)) xanh - hanh trinh cua nhung cong san ((toan cau) or (toan ban))*.