Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
hanh trinh » hanh chinh
dang cong » dung cong
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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

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