Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
cao hoi » cau hoi, co hoi, cao hoc
hanh di » hanh vi, hanh de, hang di
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
xuc va » tuc va, luc va, xac va
di cua » dai cua, doi cua, de cua

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 y nang cao hoi. hieu ((ve cam) OR (va cam)) ((xuc va) or (duc va)) hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang cao hoi. hieu ((ve cam) OR (va cam)) ((xuc va) OR (duc va)) hanh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang cao hoi. hieu ((ve cam) OR (va cam)) ((xuc va) or (duc va)) hanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang cao hoi. hieu ((ve cam) OR (va cam)) ((xuc va) or (duc va)) hanh di cua triet*.