Perhaps you should try some spelling variations:
doanh thai » doanh tai, doanh thanh, doanh nhan
san doanh » van doanh, toan doanh, vay doanh
thai cua » than cua, tai cuc, tri cua
te sach » toc sach
duc san » duc tan, duc van, dac san
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky danh

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)) xay hoi. ((hieu va) OR (hieu qua)) cam duc san doanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky dang) OR (ky nang)) xay hoi. ((hieu va) OR (hieu qua)) cam duc san doanh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky dang) or (ky nang)) xay hoi. ((hieu va) OR (hieu qua)) cam duc san doanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky dang) or (ky nang)) xay hoi. ((hieu va) OR (hieu qua)) cam duc san doanh thai cua tre*.