Perhaps you should try some spelling variations:
van nhan » van phan, van thanh, danh nhan
nhan tai » hang tai, van tai, toan tai
so sach » so sanh, bo sach, co 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
vu cham » va cham, vu kham, tu cham
va chat » van chat, va phat, cao chat
xuc van » duc van, luc van, vuc van
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: so sach ty nang xa hoi. hieu ((vu cham) or (va chat)) xuc van nhan tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. hieu ((vu cham) OR (va chat)) xuc van nhan tai va thiet.
• Adding a wildcard symbol may retrieve word variants: so sach ty nang xa hoi. hieu ((vu cham) or (va chat)) xuc van nhan tai va thiet*.