Perhaps you should try some spelling variations:
chiet tach » chieu sach
thien hach » thien thanh, hien hanh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dang cong » dung cong
van thanh » ban thanh, van tuan
cua dang » cua cong, cua ban
van toan » van tuan, van tan, manh toan

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

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