Perhaps you should try some spelling variations:
dang xay » dang van, van xay
cau thuc » cau truc, cuu thuc, can thuc
xay hoi » xa hoi, tay hoi, cay phoi
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ca tren » cau tren, cu tren, la tren
sinh y » sinh ly
y dang » ky dang, 2 dang, _ dang
va cau » van cau, va cac, va dau
vi ca » vit ca, li ca, va ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh y dang xay hoi. hieu va cau thuc va danh vi ca tren~.
• Adding a wildcard symbol may retrieve word variants: hoc sinh y dang xay hoi. hieu va cau thuc va danh vi ca tren*.