Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
bo sach » co sach, hoc sach
sach ky » sac ky, sach y, sach ty
xuc van » duc van, luc van, vuc van
ve cac » vien cac
x hoi » o hoi, x ho, 5 hoi
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach ky nang ((x hoi) or (xa hoi)). hieu ((ve cac) or (va cac)) xuc van hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky nang ((x hoi) OR (xa hoi)). hieu ((ve cac) OR (va cac)) xuc van hanh vi su triet.
• Adding a wildcard symbol may retrieve word variants: bo sach ky nang ((x hoi) or (xa hoi)). hieu ((ve cac) or (va cac)) xuc van hanh vi su triet*.