Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
day hanh » day nhanh, day thanh, dao hanh
thuc day » thuc dan, thuc vat
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
vu cham » va cham, vu kham, tu cham
tai cuu » tai cuc, tai buu, tai cua
ve cham » va cham, ve chat, ve chim
sach ty » sach y, sach tu, sach thu
mang xa » lang xa, mang may, mang cua
cuu tre » cua tre, cau tren, cau treo

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 ((mang xa) or (dang xay)) hoi. hieu ((ve cham) or (vu cham)) thuc day hanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((mang xa) OR (dang xay)) hoi. hieu ((ve cham) OR (vu cham)) thuc day hanh tai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((mang xa) or (dang xay)) hoi. hieu ((ve cham) or (vu cham)) thuc day hanh tai cuu tre*.