Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
ban thanh » ban hanh, ban hang
vu sach » su sach, vu khach
lam cua » nam cua, lam chat
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
nang o » nang co, nang ho, nang ro
ve cam » ve cham, ve cac, ve cai
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: ((vu sach) or (vu bach)) ky nang o hoi. hieu ((ve cam) or (va cam)) xuc ban thanh lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) ky nang o hoi. hieu ((ve cam) OR (va cam)) xuc ban thanh lam cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu bach)) ky nang o hoi. hieu ((ve cam) or (va cam)) xuc ban thanh lam cua tre*.