Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
dao truc » dao tuc, dao tru, dai truc
hanh lam » thanh lap, hanh kem, hanh va
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
su tien » su kien, su hien, tu tieng
y nang » ly nang, v nang, may nang
va dao » ca dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((y nang) or (ky nang)) ma hoa. hieu va dao truc va hanh lam ((cua tre) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((y nang) OR (ky nang)) ma hoa. hieu va dao truc va hanh lam ((cua tre) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((y nang) or (ky nang)) ma hoa. hieu va dao truc va hanh lam ((cua tre) or (su tien))*.