Perhaps you should try some spelling variations:
su sach » so sach, vu sach
ky lang » ky dang, ky tang, tay lang
van hoc » van hoa
van cam » van nam, van cau, van dam
van lam » van nam
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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 ((ky lang) OR (ky nang)) van hoc. hieu ((van cam) or (van lam)) xuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky lang) OR (ky nang)) van hoc. hieu ((van cam) OR (van lam)) xuc va hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky lang) OR (ky nang)) van hoc. hieu ((van cam) or (van lam)) xuc va hanh vi cua tre*".