Perhaps you should try some spelling variations:
gianh lai » gian lan
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
cua tre » cua te, cuu tre, cua triet
va cao » va cac, va co, va dao
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: tu sach tu nang x hoi. hieu va cao duc va ((gianh lai) or (dinh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang x hoi. hieu va cao duc va ((gianh lai) OR (dinh van)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang x hoi. hieu va cao duc va ((gianh lai) or (dinh van)) cua tre*.