Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
trang va » tran van, hang va
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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 (toc thieu)) sach - hanh trang va ((nhung cong) or (dang cong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) sach - hanh trang va ((nhung cong) OR (dang cong)) dan toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (toc thieu)) sach - hanh trang va ((nhung cong) or (dang cong)) dan toan cau*.