Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
van hanh » van thanh, ban hanh, van anh
hanh ve » hanh vi, hanh va, hanh kem
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
su tien » su kien, su hien, tu tieng
tu tong » tu tuong, tu trong, tu dong
tu nong » tu dong, tu cong, tu tuong
tu nang » tru nang, tu nano, tu lang
va cam » va cham, va cac, va cao
ve su » va su
x hoi » xa hoi, o hoi, x ho

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: thuoc sach ((tu nang) OR (((tu nong) OR (tu tong)))) x hoi. hieu va cam xuc van hanh ve su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((tu nang) or (((tu nong) OR (tu tong)))) x hoi. hieu va cam xuc van hanh ve su tien~".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((tu nang) or (((tu nong) OR (tu tong)))) x hoi. hieu va cam xuc van hanh ve su tien*.