Perhaps you should try some spelling variations:
nang doc » nang luc
bao truc » bao thuc, ba truc, bao trung
vao truc » vao thuc, cau truc, dao tuc
ve triet » va trien, su triet
su sach » so sach, vu sach
doc hoi » duoc hoi, hoc hoi, doc hai
va hanh » van hanh, va thanh, va danh
sach 2 » sach y
2 nang » v nang
vi ve » va ve, gi ve, ve ve

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 2 nang doc hoi. lieu va ((bao truc) or (vao truc)) va hanh vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach 2 nang doc hoi. lieu va ((bao truc) OR (vao truc)) va hanh vi ve triet.
• Adding a wildcard symbol may retrieve word variants: su sach 2 nang doc hoi. lieu va ((bao truc) or (vao truc)) va hanh vi ve triet*.