Perhaps you should try some spelling variations:
dang bai » dung bai, dang hai, dang ba
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
va hanh » van hanh, va thanh, va danh
ky dang » ky nang, ky danh
bai hoi » bai choi, bai hoc, dai hoi
hieu ve » hieu va, hieu van
cua tre » cuu tre, cua triet, dua tren
va dan » ca dan, va dao, va dau
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
cua te » cua tu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky dang bai hoi. hieu ve cac nuoc ((va hanh) OR (va dan)) hai ((cua tre) OR (cua te))~.
• Adding a wildcard symbol may retrieve word variants: tu sac ky dang bai hoi. hieu ve cac nuoc ((va hanh) or (va dan)) hai ((cua tre) or (cua te))*.