Perhaps you should try some spelling variations:
cac thuc » cach thuc, cac thu, can thuc
cu tren » tu tren, dua tren
danh di » danh du, xanh di, danh dien
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
te sach » toc sach
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
ca tren » cau tren, la tren, co tren
ve cac » va cac, vien cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang x) OR (sang ma)) hoi. hieu ve cac thuc va danh di ((cu tren) OR (ca tren))~.
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang x) or (sang ma)) hoi. hieu ve cac thuc va danh di ((cu tren) or (ca tren))*.