Perhaps you should try some spelling variations:
nhan thuc » nhan luc, dan thuc, toan thuc
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
van nhan » van phan, van thanh, danh nhan
va hanh » van hanh, va danh, ban hanh
tai cua » thai cua, tai cuc, tri cua
su sach » so sach, vu sach
sach v » sach va, sach y, sach 2
nang o » nang co, nang ho, nang ro
v nang » va nang, vu nang, van nang
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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 o hoi. hieu van nhan thuc ((va hanh) OR (va thanh)) tai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach v nang o hoi. hieu van nhan thuc ((va hanh) OR (va thanh)) tai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach v nang o hoi. hieu van nhan thuc ((va hanh) OR (va thanh)) tai cua te*.