Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
hieu van » hieu va, thien van, hieu ve
cham xuc » cam xuc, chat xuc, pham duc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cu tren » tu tren, dua tren
nang o » nang co, nang ho, nang ro
van cu » van cau, van chu, van cua
o hoi » co hoi, o hoc, o hai

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: tu sach ky nang o hoi. ((hieu van) OR (lieu va)) ((cham xuc) OR (cham soc)) van thanh van cu tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang o hoi. ((hieu van) OR (lieu va)) ((cham xuc) or (cham soc)) van thanh van cu tren~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang o hoi. ((hieu van) OR (lieu va)) ((cham xuc) or (cham soc)) van thanh van cu tren*.