Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
ky dang » ky nang, ky danh
va danh » va dinh, va dan, va hanh
ky tang » ky nang, kho tang, ky trong
dau cua » day cua, cau cua, dan cua
te sach » toc sach
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va, loc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ky tang) OR (ky dang)) ma hoi. hieu van cham luc va danh ((dau cua) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky tang) OR (ky dang)) ma hoi. hieu van cham luc va danh ((dau cua) OR (dai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky tang) OR (ky dang)) ma hoi. hieu van cham luc va danh ((dau cua) or (dai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky tang) OR (ky dang)) ma hoi. hieu van cham luc va danh ((dau cua) or (dai cua)) triet*.