Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
hanh ca » hanh cac, hanh cat, hanh cua
luc van » luoc van, luu van, duc van
su sach » so sach, vu sach
vu nang » vuc nang, va nang, vu dang
va cam » va cham, va cac, va cao
v nang » va nang, van nang, voi nang
ca cua » co cua
ve cai » va cai, ve cac, ve tai

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 ((v nang) OR (vu nang)) xa hoi. hieu ((ve cai) or (va cam)) luc van hanh ca cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((v nang) OR (vu nang)) xa hoi. hieu ((ve cai) OR (va cam)) luc van hanh ca cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((v nang) OR (vu nang)) xa hoi. hieu ((ve cai) or (va cam)) luc van hanh ca cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((v nang) OR (vu nang)) xa hoi. hieu ((ve cai) or (va cam)) luc van hanh ca cua triet*.