Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cam thuc » am thuc, nam thuc, cam thu
hanh tai » hang tai, han tai, hinh tai
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te san
te cac » tu cac, ve cac, te cao
va cam » va cham, va cac, va cao

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: ((te sac) OR (te cac)) ky nang x ho. lieu va cam thuc va ((hanh tai) OR (thanh tai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (te cac)) ky nang x ho. lieu va cam thuc va ((hanh tai) OR (thanh tai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te cac)) ky nang x ho. lieu va cam thuc va ((hanh tai) OR (thanh tai)) cua tre*.