Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
han tri » van tri, thanh tri, chan troi
han tai » hang tai, nhan tai, van tai
van toi » van tai, van thi, van toan
soc va » hoc va, loc va, doc 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 ve cham soc va ((((han tri) or (han tai))) or (van toi)) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu ve cham soc va ((((han tri) OR (han tai))) OR (van toi)) va thiet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu ve cham soc va ((((han tri) or (han tai))) or (van toi)) va thiet*.