Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh ve » hanh ve, thanh va, thanh vien
cao hoi » cau hoi, co hoi, cao hoc
thuc va » thuc vat, thuc dan, thuc day
cua tre » cuu tre, cua triet, dua tren
tu cai » tu cac, tu can, tu bai
cai ky » cao ky, cac ky, cam ky
ve nam » va nam, le nam, te nam
he nam » ha nam, nghe nam
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 cai ky nang cao hoi. hieu ((ve nam) OR (he nam)) thuc va thanh ve ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cai ky nang cao hoi. hieu ((ve nam) OR (he nam)) thuc va thanh ve ((cua tre) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: tu cai ky nang cao hoi. hieu ((ve nam) OR (he nam)) thuc va thanh ve ((cua tre) or (cua te))*.