Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
va dinh » van dinh, va kinh, vu dinh
va tinh » may tinh
cham xu » chao xu, cham cuu, chat xuc
va cham » va chat, va tham
hieu va » lieu va, hieu qua
te sach » toc sach
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) OR (te sach)) ky nang x hoi. hieu va cham xu ((va tinh) or (va dinh)) va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang x hoi. hieu va cham xu ((va tinh) OR (va dinh)) va cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ky nang x hoi. hieu va cham xu ((va tinh) or (va dinh)) va cua tre*".