Perhaps you should try some spelling variations:
van nhan » van phan, van thanh, danh nhan
thai van » thi van, thanh van, thai vung
cham vuc » cham soc, pham duc, cham cuu
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
hieu va » lieu va, hieu qua
van han » van hanh, van phan, van hoan
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 va cham vuc ((van han) or (van nhan)) ((thai va) OR (thai van)) thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu va cham vuc ((van han) OR (van nhan)) ((thai va) OR (thai van)) thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu va cham vuc ((van han) or (van nhan)) ((thai va) OR (thai van)) thiet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu va cham vuc ((van han) or (van nhan)) ((thai va) OR (thai van)) thiet*.