Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
luc van » luoc van, luu van, duc van
hanh tu » anh tu, danh tu
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

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