Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
xuc van » duc van, luc van, vuc van
va cham » va chat, va tham
su sach » so sach, vu sach
va nang » van nang, da nang, cam nang
vu nang » vuc nang, vu dang, v nang
hieu va » lieu va, hieu qua
oi su » ki su, vi su

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