Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tieu sach » chieu sach, dien sach, te sach
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - hanh tranh cua ((hang cong) or (bang cong)) tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh tranh cua ((hang cong) OR (bang cong)) tan than cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh tranh cua ((hang cong) or (bang cong)) tan than cau*.