Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va
xuc van » duc van, luc van, vuc van
san cua » sang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
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: vu sach ky nang o hoi. ((hieu ve) OR (hieu van)) cam xuc van thanh san cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang o hoi. ((hieu ve) OR (hieu van)) cam xuc van thanh san cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang o hoi. ((hieu ve) OR (hieu van)) cam xuc van thanh san cua tre*.