Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
hieu van » hieu va, thien van, lieu va
te sach » toc sach
ly nang » ky nang, ly hang, ly vang
van cau » van dau, van hau, van chat
cau duc » cao duc, cau luc, chu duc
duc gia » quoc gia
y nang » ky nang, v nang, may nang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((y nang) or (ly nang)) x ho. hieu van cau duc gia thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) x ho. hieu van cau duc gia thanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) or (ly nang)) x ho. hieu van cau duc gia thanh vi cua triet*.