Perhaps you should try some spelling variations:
cac thuc » cach thuc, cac thu, can thuc
su sach » so sach, vu sach
qua cac » cua cac
thuc va » thuc vat, thuc dan, thuc day
va tinh » may tinh
tinh ca » tinh cao, tinh cua, tinh va
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
me hoi » le hoi
ca cua » co cua

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 ((me hoi) OR (ma hoa)). hieu qua cac thuc va tinh ca cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ((me hoi) OR (ma hoa)). hieu qua cac thuc va tinh ca cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((me hoi) OR (ma hoa)). hieu qua cac thuc va tinh ca cua tre*.