Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
van nang » van quang, van ban, van dong
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
su sach » so sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
va cham » va chat, va tham
luc va » duc va, tuc va, loc va
vi cua » di cua

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