Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham xuc » cam xuc, chat xuc, cham soc
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va lang » hoa lang
va nang » van nang, da nang, cam nang
tai va » thai va, mai va, tri va
thiet » thieu

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