Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dao » lanh dao, thanh dat, thanh dam
lang van » dang van, tang van, hoang van
cua tre » cua te, cuu tre, dua tren
va hanh » van hanh, va thanh, va danh
cao xuc » cam xuc, cao duc, cao suc
tu sach » thu sach, su sach, tu cach
van hoi » van hoa, van hoc, van hoe
ky lang » ky nang, ky dang, ky tang
te sach » toc sach
hieu va » lieu va, hieu qua
va cao » va cac, va co, va dao
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: ((tu sach) or (te sach)) ky lang van hoi. hieu va cao xuc va hanh dao ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky lang van hoi. hieu va cao xuc va hanh dao ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky lang van hoi. hieu va cao xuc va hanh dao ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky lang van hoi. hieu va cao xuc va hanh dao ((cua tre) OR (cua triet))*.