Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
su sach » so sach, vu sach
hoi cua » hoi chuc
hai cua » thai cua, dai cua, lai cua
xuc van » duc van, luc van, xuc ban
sach ky » sac ky, sach y, sach ty
ve cam » ve cham, va cam, ve cai
nang o » nang co, nang ho, nang ro
ve cac » va cac, vien cac
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: su sach ky nang o hoi. hieu ((ve cam) OR (ve cac)) xuc van thanh ((hai cua) OR (hoi cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang o hoi. hieu ((ve cam) OR (ve cac)) xuc van thanh ((hai cua) or (hoi cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang o hoi. hieu ((ve cam) OR (ve cac)) xuc van thanh ((hai cua) or (hoi cua)) tre*.