Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
cham xuc » cam xuc, chat xuc, pham duc
thanh va » thanh van, hanh va, thanh ha
cau tren » cu tren, dau tren, ca tren
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va cau » van cau, va cac, va dau
x hoi » xa hoi, o hoi, 5 hoi

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