Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu va » lieu va, hieu qua
cham tu » pham tu, cam tu, chay tu
chai tu » cai tu, choi tu, chay tu
va hanh » van hanh, va thanh, va danh
tu van » tu va
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu van ky nang x hoi. hieu va ((cham tu) OR (chai tu)) va hanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu van ky nang x hoi. hieu va ((cham tu) OR (chai tu)) va hanh vi cua triet*.