Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
chat cua » nhat cua, ca cua, chat co
chat huu » pham huu
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
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: toc sach tu nang xa hoi. hieu ve ((((chat cua) or (chat va))) or (chat huu)) van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach tu nang xa hoi. hieu ve ((((chat cua) OR (chat va))) OR (chat huu)) van hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach tu nang xa hoi. hieu ve ((((chat cua) or (chat va))) or (chat huu)) van hanh vai cua tre*.