Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh phan » trinh han, trinh quan, thanh phan
phan chung » phan cung, phan hung, phan thuong
hoang manh » hoang minh, hoang anh, hoang xanh
hoc thieu » toc thieu, hoc hien
nong manh » nong lanh, duong manh, luong manh
ho chieu » theo chieu, mot chieu, doi chieu
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 (hoc thieu)) sach - hanh trinh phan chung ((nong manh) or (hoang manh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - hanh trinh phan chung ((nong manh) OR (hoang manh)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - hanh trinh phan chung ((nong manh) or (hoang manh)) toan cau*.