Perhaps you should try some spelling variations:
van chao » van chat, van cho, van khao
van dinh » van minh, van dich, va dinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
van hao » van dao, van ha, van bao
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang x hoi. hieu ((van chao) OR (van hao)) xu ((va tinh) or (van dinh)) va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ((van chao) OR (van hao)) xu ((va tinh) OR (van dinh)) va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu ((van chao) OR (van hao)) xu ((va tinh) or (van dinh)) va cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu ((van chao) OR (van hao)) xu ((va tinh) or (van dinh)) va cua tre*.