Perhaps you should try some spelling variations:
hanh mang » nhanh mang, hanh trang, nhanh lang
mang luan » tang luan, hang luan, bang luan
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, than cap
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: theo chu sach - hanh mang luan nang cong dan ((than cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - hanh mang luan nang cong dan ((than cau) OR (toan cao))*.