Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
van lam » van nam
lam xuc » cam xuc, lam duoc
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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 y nang o hoi. hieu van lam xuc van thanh san ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang o hoi. hieu van lam xuc van thanh san ((cua tre) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: su sach y nang o hoi. hieu van lam xuc van thanh san ((cua tre) or (su triet))*.