Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cham xu » chao xu, cham cuu, chat xuc
va dinh » van dinh, va kinh, va 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
tinh » minh, kinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang x hoi. hieu ve cham xu ((may (tinh or trinh)) or (va dinh)) va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu ve cham xu ((may (tinh OR trinh)) OR (va dinh)) va cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu ve cham xu ((may (tinh or trinh)) or (va dinh)) va cua tre*.