Perhaps you should try some spelling variations:
ve triet » va trien, su triet
va triet » va thiet, va trien, cua triet
thai van » thi van, thanh van, thai vung
cac thai » cac thoi, ca thai, cac thi
hieu ve » hieu va, hieu van
van anh » van thanh, tuan anh, van minh
co sach » bo sach, cuon sach, hoc sach
su sach » so sach, vu sach
nang o » nang co, nang ho, nang ro
ve cac » va cac, vien cac
anh di » danh di, xanh di, anh d
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) or (co sach)) ky nang o hoi. hieu ve cac thai van anh di ((va triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (co sach)) ky nang o hoi. hieu ve cac thai van anh di ((va triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (co sach)) ky nang o hoi. hieu ve cac thai van anh di ((va triet) or (ve triet))*.