Perhaps you should try some spelling variations:
thanh tung » thanh cong
van thanh » ban thanh, van tuan
cau phuc » cau truc, chau phu, huu phuc
phuc van » thuc van, phuc va, chuc van
va triet » va thiet, va trien, cua triet
ve triet » va trien, su triet
su sach » so sach, vu sach
hieu ke » hieu kem, chieu ke, hieu ky
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
ke cau » ket cau
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 y nang o hoi. hieu ke cau phuc van thanh tung ((va triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang o hoi. hieu ke cau phuc van thanh tung ((va triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: su sach y nang o hoi. hieu ke cau phuc van thanh tung ((va triet) or (ve triet))*.