Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tran anh » tran manh, tuan anh, tran thanh
duc tran » duc tan, duc toan, duc tren
lky nang » ly nang, ki nang, ke nang
hieu van » thien van, lieu va, hieu ve
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
su sach » so sach, vu sach
anh vi » hanh vi, anh va, anh ve
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: su sach ((ky nang) or (lky nang)) xa hoi. ((hieu van) or (hieu va)) cao duc tran anh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky nang) OR (lky nang)) xa hoi. ((hieu van) OR (hieu va)) cao duc tran anh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky nang) or (lky nang)) xa hoi. ((hieu van) or (hieu va)) cao duc tran anh vi cua triet*.