Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
hieu van » hieu va, thien van, lieu va
van chat » cao chat
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
so sanh » do sanh
su sach » so sach, vu sach
v nang » va nang, vu nang, van nang
tuc va » thuc va, tuc xa, duc va
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) or (so sanh)) v nang xa hoi. hieu van chat ((tuc va) OR (truc va)) thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) v nang xa hoi. hieu van chat ((tuc va) OR (truc va)) thanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) v nang xa hoi. hieu van chat ((tuc va) OR (truc va)) thanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) v nang xa hoi. hieu van chat ((tuc va) OR (truc va)) thanh vi cua triet*.