Perhaps you should try some spelling variations:
chat triet » chet triet, phat trien, chat thien
thanh nam » hanh nam, thanh tam, thanh pham
nam chat » lam chat, nam nhat, dam chat
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
vu sach » vu bach, su sach, vu khach
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, ve cai
o hai » co hai, so hai, o lai
o hoi » co hoi, o hoc, o hoa

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang ((o hoi) OR (o hai)). hieu ((ve cam) OR (va cam)) xuc va thanh nam chat triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang ((o hoi) OR (o hai)). hieu ((ve cam) or (va cam)) xuc va thanh nam chat triet~".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang ((o hoi) OR (o hai)). hieu ((ve cam) or (va cam)) xuc va thanh nam chat triet*.