Perhaps you should try some spelling variations:
nhan tri » nhan tai, nhanh thi, thanh tri
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
ve cham » ve chat, ve chim, viet cham
vu cham » vu kham, tu cham, qua cham
va cham » va chat, va tham
truc va » thuc va, thuc vat, trung va
va nhan » van nhan, ca nhan, va phan
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 ((((ve cham) OR (vu cham))) or (va cham)) truc va nhan tri va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. hieu ((((ve cham) OR (vu cham))) OR (va cham)) truc va nhan tri va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang xa hoi. hieu ((((ve cham) OR (vu cham))) or (va cham)) truc va nhan tri va thiet".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang xa hoi. hieu ((((ve cham) OR (vu cham))) or (va cham)) truc va nhan tri va thiet*.