Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, xac va
luc va » tuc va, loc va
vi cua » vai cua, di cua
o hai » co hai, so hai, o lai

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 hai. hieu ve cam ((((xuc va) or (luc va))) or (duc va)) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang o hai. hieu ve cam ((((xuc va) OR (luc va))) OR (duc va)) hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang o hai. hieu ve cam ((((xuc va) or (luc va))) or (duc va)) hanh vi cua triet*.