Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nhan luc » nang luc
hieu van » hieu va, thien van, lieu va
van nhan » van phan, van thanh, danh nhan
nang xa » nang x, lang xa, nang ma
te sach » toc sach
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
tu sach » thu sach, su sach, tu cach
v nang » va nang, vu nang, van nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) v nang xa hoi. hieu van nhan luc ((va hanh) or (va danh)) dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) v nang xa hoi. hieu van nhan luc ((va hanh) OR (va danh)) dai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) v nang xa hoi. hieu van nhan luc ((va hanh) or (va danh)) dai cua triet*.