Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh loi » thanh hoa, thanh hai, thanh lap
tac dung » sach dung, xay dung, tin dung
dung ban » dung san, dung dan, dong ban
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
ve tac » va tac, ve cac, ve tai
cua te » cua tu
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 y nang x hoi. hieu ve tac dung ban thanh loi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ve tac dung ban thanh loi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ve tac dung ban thanh loi ((cua tre) or (cua te))*.