Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thien van » thi van
va hanh » van hanh, va thanh, va danh
cau luc » cau truc, cau phuc
van cau » van dau, van hau, van chat
su sach » so sach, vu sach
ty nang » ky nang, ty hang, ly nang
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi
luc va » duc va, tuc va, loc va
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 ((ty nang) OR (ty xang)) ((ma hoi) or (mai hoi)). thien van cau luc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ty xang)) ((ma hoi) OR (mai hoi)). thien van cau luc va hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) OR (ty xang)) ((ma hoi) or (mai hoi)). thien van cau luc va hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) OR (ty xang)) ((ma hoi) or (mai hoi)). thien van cau luc va hanh vi cua triet*.