Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
van tham » van thanh, van tuan, van chat
va tham » va cham, va thanh, va thuat
hanh di » hanh vi, hanh de, hang di
y nang » ky nang, ly nang, v nang
loc va » hoc va, luc va
tuc va » thuc va, truc va, tuc xa
di cua » dai cua, doi cua, de 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 x hoi. lieu ((va tham) OR (van tham)) ((loc va) or (tuc va)) hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang x hoi. lieu ((va tham) OR (van tham)) ((loc va) OR (tuc va)) hanh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang x hoi. lieu ((va tham) OR (van tham)) ((loc va) or (tuc va)) hanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang x hoi. lieu ((va tham) OR (van tham)) ((loc va) or (tuc va)) hanh di cua triet*.