Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
hanh van » thanh van, khanh van, hanh va
kho tang » cao tang
van lam » van nam
van cau » van dau, van hau, van chat
va hanh » van hanh, va thanh, va danh
te sach » toc sach
ky tang » ky nang, ky dang, ky trong
van cam » van nam, van dam, ban cam
xuc va » duc va, tuc va, luc va

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 ((ky tang) or (kho tang)) xa hoi. hieu ((van cam) OR (van lam)) xuc va hanh van cau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky tang) OR (kho tang)) xa hoi. hieu ((van cam) OR (van lam)) xuc va hanh van cau triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky tang) or (kho tang)) xa hoi. hieu ((van cam) OR (van lam)) xuc va hanh van cau triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky tang) or (kho tang)) xa hoi. hieu ((van cam) OR (van lam)) xuc va hanh van cau triet*.