Perhaps you should try some spelling variations:
doanh thai » doanh tai, doanh thanh, doanh nhan
tan doanh » toan doanh, van doanh, san doanh
thai cua » than cua, tai cuc, tri cua
te sach » toc sach
ky dang » ky danh
tao hoi » tao khoi, tao boi, tay hoi
qua cam » qua cham, qua ca, qua cai
qua cac » cua cac
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ky dang) or (ky nang)) tao hoi. hieu ((qua cam) OR (qua cac)) duc tan doanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky dang) OR (ky nang)) tao hoi. hieu ((qua cam) OR (qua cac)) duc tan doanh thai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky dang) or (ky nang)) tao hoi. hieu ((qua cam) OR (qua cac)) duc tan doanh thai cua tre*".