Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
thanh cha » thanh ha, thanh nha, thanh phan
trinh su » trinh tu, trinh san, trinh cau
cong san » cong tac
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doi chieu)) xanh - hanh trinh su dung cong san ((thanh cha) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chieu)) xanh - hanh trinh su dung cong san ((thanh cha) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chieu)) xanh - hanh trinh su dung cong san ((thanh cha) or (phan cau))*.