Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
doi chieu » doc hieu, doi chi, mot chieu
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
tan dung » tran dung, tin dung, van dung
cong san » cong tac
san tan » van tan, san van, san tay
tan cau » toan cau, van cau, tan ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) sach - ((hanh trinh) or (canh tranh)) tan dung cong san tan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - ((hanh trinh) OR (canh tranh)) tan dung cong san tan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - ((hanh trinh) or (canh tranh)) tan dung cong san tan cau*".