Perhaps you should try some spelling variations:
danh van » doanh van, dang van, dinh van
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
ky danh » ky anh, ky dang
van hoi » van hoa, van hoc, van hoe
hanh di » hanh vi, hanh de, hang di
xuc va » tuc va, luc va
xac va » tac va, ac va, bac va
di va » dai va, di vao, doi va
thiet » thieu

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: so sach ky danh van hoi. lieu va cac ((((xuc va) OR (xac va))) OR (duc va)) hanh di va thiet~.
• Adding a wildcard symbol may retrieve word variants: so sach ky danh van hoi. lieu va cac ((((xuc va) or (xac va))) or (duc va)) hanh di va thiet*.