Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
tham thuc » nham thuc, pham thuc, tam thuc
dang xay » dang van, van xay
qua tham » qua cham, qua than, qua thanh
va thanh » gia thanh, ban thanh, va tinh
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
te dai » tre dai, te tai, he dai
dai ky » dan ky, dai ly, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te dai ky dang xay hoi. hieu qua tham thuc va thanh tai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te dai ky dang xay hoi. hieu qua tham thuc va thanh tai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te dai ky dang xay hoi. hieu qua tham thuc va thanh tai ((cua tre) or (cuu tre))*.