Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
van dinh » van minh, van dich, xuan dinh
cua viet » ca viet, cua vat, cua dieu
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va dinh » va kinh, va tinh, vu dinh
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu ve cham luc ((va dinh) OR (van dinh)) di ((cua viet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ve cham luc ((va dinh) OR (van dinh)) di ((cua viet) OR (hoa viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu ve cham luc ((va dinh) OR (van dinh)) di ((cua viet) or (hoa viet))".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ve cham luc ((va dinh) OR (van dinh)) di ((cua viet) or (hoa viet))*.