Perhaps you should try some spelling variations:
trang luan » tang luan, tranh luan, trang tuan
hanh trang » thanh trung, canh tranh, hanh trinh
cong huong » cong thuong, cong luong, cong hung
luan cong » luat cong, luong cong, luan chung
ho chieu » theo chieu, hoc thieu, doi chieu
toan cao » toan tap
toan ban » van ban

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 tieu)) sach - hanh trang luan cong huong dan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo tieu)) sach - hanh trang luan cong huong dan ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo tieu)) sach - hanh trang luan cong huong dan ((toan cao) or (toan ban))*.