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