Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tranh » canh tranh, hanh trinh, hanh trang
duong manh » duong van
manh tuan » anh tuan, manh toan, minh tuan
ho chieu » hoc thieu, doi chieu, mot chieu
cua dung » cua dang, qua dung, cua rung
cua dong » chua dong, cua cong, cua dang
tuan cau » toan cau, quan cau, tuan cu

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 (theo chieu)) sach - hanh tranh ((cua dung) or (cua dong)) duong manh tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - hanh tranh ((cua dung) OR (cua dong)) duong manh tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - hanh tranh ((cua dung) or (cua dong)) duong manh tuan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - hanh tranh ((cua dung) or (cua dong)) duong manh tuan cau*.