Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
co sach » bo sach, cuon sach, hoc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van bac » van ban, van hac, dan bac
van bao » van ban, van dao
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ky nang xa hoi. hieu ((van bac) or (van bao)) duc va hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ky nang xa hoi. hieu ((van bac) OR (van bao)) duc va hanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: co sach ky nang xa hoi. hieu ((van bac) or (van bao)) duc va hanh thai cua tre*.