Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
va triet » va thiet, va trien, ve triet
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
xuc van » luc van, thuc van, chuc van
xuc ban » duc ban, cuc ban, quoc ban
duc van » duc va, duc tan, duc manh
va cao » va cac, va co, va dao
vi va » vi van, vai va, vu va

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 ky nang xa hoi. hieu va cao ((((xuc van) or (xuc ban))) or (duc van)) hanh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang xa hoi. hieu va cao ((((xuc van) OR (xuc ban))) OR (duc van)) hanh vi va triet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang xa hoi. hieu va cao ((((xuc van) or (xuc ban))) or (duc van)) hanh vi va triet*.