Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh vai » thanh van, thanh tai, thanh oai
lieu van » hieu van, sieu van, lieu nano
su sach » so sach, vu sach
nam xuc » cam xuc, nam xua, nam thuc
xuc ban » duc ban, cuc ban, quoc ban
sach ky » sac ky, sach y, sach ty
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: su sach ky nang o hoi. ((lieu van) or (lieu va)) nam xuc ban ((thanh vai) OR (thanh hai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang o hoi. ((lieu van) OR (lieu va)) nam xuc ban ((thanh vai) OR (thanh hai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang o hoi. ((lieu van) or (lieu va)) nam xuc ban ((thanh vai) OR (thanh hai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang o hoi. ((lieu van) or (lieu va)) nam xuc ban ((thanh vai) OR (thanh hai)) cua tre*.