Perhaps you should try some spelling variations:
vang cua » mang cua, hang cua, tang cua
va thanh » gia thanh, ban thanh, va tinh
cham luc » cham soc, nhan luc, cham cuu
sach ty » sach y, sach tu, sach thu
van cua » ban cua, dan cua, nan cua
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
ty nang » ky nang, ty xang, ty hang
va cham » va chat, va tham
luc va » duc va, tuc va, loc va
o hai » co hai, so hai, o lai
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: tu sach ty nang ((x hoi) or (o hai)). hieu va cham luc va thanh ((van cua) OR (vang cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((x hoi) OR (o hai)). hieu va cham luc va thanh ((van cua) OR (vang cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang ((x hoi) or (o hai)). hieu va cham luc va thanh ((van cua) OR (vang cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((x hoi) or (o hai)). hieu va cham luc va thanh ((van cua) OR (vang cua)) triet*.