Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
cua tre » cua te, cuu tre, cua triet
ban anh » ban hanh, ban banh, ban danh
xuc ban » duc ban, cuc ban, quoc ban
sach tu » sach thu, cach tu, sach ty
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
tu nang » tru nang, tu nong, tu nano
anh de » hanh de, anh d, anh ve
cua tu » cua tuc, cua su, cua cu
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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) OR (o hoi)). hieu ve cham xuc ban anh de ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang ((x hoi) OR (o hoi)). hieu ve cham xuc ban anh de ((cua tre) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu nang ((x hoi) OR (o hoi)). hieu ve cham xuc ban anh de ((cua tre) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang ((x hoi) OR (o hoi)). hieu ve cham xuc ban anh de ((cua tre) or (cua tu))*.