Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
thuc day » thuc dan, thuc vat
danh du » danh dau, danh tu, dinh du
thuc va » thuc vat, thuc dan
su sach » so sach, vu sach
so sanh » do sanh
nang xa » nang x, lang xa, nang ma
van bac » van ban, van bao, van hac
y nang » ky nang, ly nang, v nang
du cua » duy cua, dau cua, dum cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) y nang xa hoi. hieu van bac ((thuc va) OR (thuc day)) danh du cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) y nang xa hoi. hieu van bac ((thuc va) OR (thuc day)) danh du cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) y nang xa hoi. hieu van bac ((thuc va) OR (thuc day)) danh du cua triet*.