Perhaps you should try some spelling variations:
va thieu » va thiet, va hieu, va tieu
hieu van » hieu va, thien van, lieu va
cham xuc » cam xuc, chat xuc, cham soc
hieu ve » hieu va
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
va han » va phan, van han, va hang
tai va » thai va, mai va, tri va
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 ky nang x hoi. ((hieu ve) or (hieu van)) cham xuc ((va han) OR (va hanh)) tai va thieu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. ((hieu ve) OR (hieu van)) cham xuc ((va han) OR (va hanh)) tai va thieu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. ((hieu ve) or (hieu van)) cham xuc ((va han) OR (va hanh)) tai va thieu".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. ((hieu ve) or (hieu van)) cham xuc ((va han) OR (va hanh)) tai va thieu*.