Perhaps you should try some spelling variations:
toan tai » toan tap, doanh tai, toan ban
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
han tai » hang tai, nhan tai, nhan tao
van tai » von tai, van tuan
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 ty nang xa hoi. hieu ve cham soc va ((((han tai) or (toan tai))) or (van tai)) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu ve cham soc va ((((han tai) OR (toan tai))) OR (van tai)) va thiet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ve cham soc va ((((han tai) or (toan tai))) or (van tai)) va thiet*.