Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van cham » van chat, va cham, gian cham
van pham » san pham, van phan, van phat
van tham » van thanh, van tuan, van chat
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
dinh da » dinh dat, dinh dao, tinh da
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
da cua » dai cua, day cua, dan cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang xa hoi. thien ((((van cham) or (van pham))) or (van tham)) tuc va dinh da cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang xa hoi. thien ((((van cham) OR (van pham))) OR (van tham)) tuc va dinh da cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang xa hoi. thien ((((van cham) or (van pham))) or (van tham)) tuc va dinh da cua tre*.