Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hanh va » hang va, hanh vi
danh va » doanh va, anh va, dan va
dao suc » dao duc, dao tuc, cao suc
su sach » so sach, vu sach
hoc hoi » hoc khoi, hoc hoa, hoc noi
vu nang » vuc nang, va nang, vu dang
suc va » duc va, tuc va, luc va
v nang » va nang, van nang, voi nang
va dao » ca dao

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