Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach xu » sach xa, cach xu, mach xu
dang xa » dang xay, dang ha, dang va
lang xa » lang ha, dang xay, lang van
cam thu » nam thu, cac thu, ca thu
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach xu ((dang xa) or (lang xa)) hoi. hieu van ((nam thuc) or (cam thu)) van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach xu ((dang xa) OR (lang xa)) hoi. hieu van ((nam thuc) OR (cam thu)) van hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach xu ((dang xa) or (lang xa)) hoi. hieu van ((nam thuc) or (cam thu)) van hanh vi cua triet*.