Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
chiet tach » chieu sach
hanh trang » thanh trung, canh tranh, hanh trinh
trang cua » tranh cua, tang cua, trung cua
tong cong » cong cong, dung cong, dang cong
van quan » van ban
quan cau » quang cao, toan cau, quan ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (chiet tach)) - hanh trang cua ((tong cong) or (trong cong)) van quan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (chiet tach)) - hanh trang cua ((tong cong) OR (trong cong)) van quan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (chiet tach)) - hanh trang cua ((tong cong) or (trong cong)) van quan cau*.