Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
sang tao » hang tai
ta thanh » tai thanh, va thanh, ha thanh
cac toc » cac toi, cac nuoc, cac thoi
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
sang ma » tang ma, nang ma, mang may
toc ta » toc tay, toc thai
tu ban » thu ban, te ban
tu san » thu san, tu can, vu san

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 san) OR (tu ban)) ky ((sang ma) OR (sang tao)) hoi. hieu va cac toc ta thanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) or (tu ban)) ky ((sang ma) OR (sang tao)) hoi. hieu va cac toc ta thanh dai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu ban)) ky ((sang ma) OR (sang tao)) hoi. hieu va cac toc ta thanh dai cua tre*.