Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cham xuc » cam xuc, chat xuc, pham duc
van hai » van ha, van chat, van hanh
van hau » van ha, van dau, van hac
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang o hoi. hieu va ((cham xuc) OR (cham soc)) van thanh ((van hau) OR (van hai)) tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang o hoi. hieu va ((cham xuc) or (cham soc)) van thanh ((van hau) OR (van hai)) tren~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang o hoi. hieu va ((cham xuc) or (cham soc)) van thanh ((van hau) OR (van hai)) tren*.