Perhaps you should try some spelling variations:
hanh mang » nhanh mang, hanh trang, nhanh lang
luan nang » luan van, van nang
cong vong » cong dong, cong cong, cong nong
vong tuan » vuong tuan, cong tuan, hoang tuan
ho chieu » theo chieu, hoc thieu, doi chieu
doc hieu » toc thieu, hoc thieu, hoc hien
luan san » luan van, luan hoan, luan phan
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 (doc hieu)) sach - hanh mang ((luan nang) OR (luan san)) cong vong tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doc hieu)) sach - hanh mang ((luan nang) OR (luan san)) cong vong tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doc hieu)) sach - hanh mang ((luan nang) OR (luan san)) cong vong tuan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doc hieu)) sach - hanh mang ((luan nang) OR (luan san)) cong vong tuan cau*.