Perhaps you should try some spelling variations:
cao suc » cao duc
va danh » va dinh, va dan, dia danh
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, ban hanh
va cao » va cac, va co, va dao
y nang » ky nang, ly nang, v nang
ca su » cua su, ca sau, va su

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