Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
cam truc » cau truc, nam truc, lam truoc
ban hang » ngan hang
truc ban » thuc ban, truc dan, truc van
hang vi » hang va, hanh vi, hang di
su sach » so sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
v nang » va nang, vu nang, van nang
va cam » va cham, va cac, va cao

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) OR (vu sach)) v nang xa hoi. hieu va cam truc ban hang vi ((cua triet) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) v nang xa hoi. hieu va cam truc ban hang vi ((cua triet) or (su triet))~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) v nang xa hoi. hieu va cam truc ban hang vi ((cua triet) or (su triet))*.