Perhaps you should try some spelling variations:
ty thong » ly thong, thuy thong, ky thuong
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
xay hoi » xa hoi, tay hoi, cay phoi
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, ban hanh
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
va nay » va ngay, va cay
nay tu » tay tu, may tu

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 ty thong xay hoi. hieu va nay tu va hanh tai cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty thong xay hoi. hieu va nay tu va hanh tai cua tre*.