Perhaps you should try some spelling variations:
cau thuc » cau truc, cuu thuc, can thuc
vat hanh » vat thanh, van hanh, va hanh
su sach » so sach, vu sach
qua cau » quan cau, qua cac, qua ca
cu tren » tu tren, dua tren
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho
vi cu » vi su, vi xu, vi du

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang x hoi. hieu qua cau thuc vat hanh vi cu tren~.
• Adding a wildcard symbol may retrieve word variants: su sach y nang x hoi. hieu qua cau thuc vat hanh vi cu tren*.