Perhaps you should try some spelling variations:
nang doc » nang luc
hieu van » hieu va, thien van, lieu va
duc manh » suc manh, duc anh, duc minh
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
doc hoi » duoc hoi, hoc hoi, doc hai
van cam » van nam, van lam, van cau
duc van » duc va, duc tan, duc phan
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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 ty nang doc hoi. hieu van cam ((duc van) OR (duc manh)) thanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang doc hoi. hieu van cam ((duc van) or (duc manh)) thanh vi cua tre*.