Perhaps you should try some spelling variations:
thanh de » hanh de, thanh ve, thanh do
va thanh » gia thanh, ban thanh, va tinh
lap thuc » tap thuc, luan thuc, phap thuc
tu sach » thu sach, su sach, te sach
thuc va » thuc vat, thuc dan, thuc day
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, ma hoa, me hoi
va lap » va dap
v nang » va nang, vu nang, van nang
de cua » le cua, te cua, dieu cua

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: tu sach ((2 nang) OR (v nang)) ((ma hoi) OR (xa hoi)). hieu va lap thuc va thanh de cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((2 nang) or (v nang)) ((ma hoi) OR (xa hoi)). hieu va lap thuc va thanh de cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((2 nang) or (v nang)) ((ma hoi) OR (xa hoi)). hieu va lap thuc va thanh de cua tre*.