Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
ly nang » ky nang, ly hang, ly vang
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
duc van » duc va, duc tan, duc manh
hanh va » hang va, hanh vi
y nang » ky nang, v nang, may nang
va cao » va cac, va co, va dao
va cua » va chua, via cua, ca cua
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((y nang) OR (ly nang)) x hoi. hieu va cao duc van hanh va cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((y nang) OR (ly nang)) x hoi. hieu va cao duc van hanh va cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ((y nang) OR (ly nang)) x hoi. hieu va cao duc van hanh va cua triet*.