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