Perhaps you should try some spelling variations:
nang doc » nang luc
tham hoc » thai hoc, tham hoa, than hoc
su triet » su viet, su tien, ve triet
vu sach » vu bach, su sach, vu khach
nang co » nang cao, nang noi, nang hoc
va tham » van tham, va cham, va thanh
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y ((nang co) or (nang doc)) hoi. lieu va tham hoc va danh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang co) OR (nang doc)) hoi. lieu va tham hoc va danh vi su triet.
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang co) or (nang doc)) hoi. lieu va tham hoc va danh vi su triet*.