Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
hanh ve » hanh vi, hanh va, hanh kem
xuc van » duc van, luc van, vuc van
hai xuc » hai cuc, hai xu, chat xuc
van hai » van ha, van chat, van phan
su sach » so sach, vu sach
vu dang » su dang, vu quang, cua dang
vu nang » vuc nang, va nang, v nang
ve cua » le cua, de cua, te cua
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((vu nang) OR (vu dang)) ((o hoi) or (xa hoi)). hieu van hai xuc van hanh ve cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((vu nang) OR (vu dang)) ((o hoi) OR (xa hoi)). hieu van hai xuc van hanh ve cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((vu nang) OR (vu dang)) ((o hoi) or (xa hoi)). hieu van hai xuc van hanh ve cua triet*".