Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
ty nang » ky nang, ty hang, ly nang
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
xuc ban » duc ban, cuc ban, quoc ban
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua

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: su sach ((ty nang) OR (ty xang)) cau hoi. hieu ve cam ((xuc van) OR (xuc ban)) hanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) OR (ty xang)) cau hoi. hieu ve cam ((xuc van) or (xuc ban)) hanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) OR (ty xang)) cau hoi. hieu ve cam ((xuc van) or (xuc ban)) hanh vi cua triet*.