Perhaps you should try some spelling variations:
su sach » so sach, vu sach
xuc ban » duc ban, cuc ban, quoc ban
xuc van » duc van, luc van, thuc van
hieu va » lieu va, hieu qua
ly nang » ky nang, ly hang, ly vang
cao hoi » cau hoi, co hoi, cao hoc
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua
va co » vo co

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ly nang) or (ty xang)) cao hoi. hieu va co ((xuc van) or (xuc ban)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ly nang) OR (ty xang)) cao hoi. hieu va co ((xuc van) OR (xuc ban)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((ly nang) or (ty xang)) cao hoi. hieu va co ((xuc van) or (xuc ban)) hanh vi cua tre*.