Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hieu ve » hieu va, hieu van
cham tu » pham tu, chai tu, chay tu
va hanh » van hanh, va thanh, va danh
tu can » tu ban, tu cac, thu canh
can ky » van ky, dan ky, ban ky
cam tu » cam thu, nam tu, dam tu
x hoi » xa hoi, o hoi, x ho
vi su » va su, ve su, ki su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu can ky nang x hoi. hieu ve ((cham tu) OR (cam tu)) va hanh vi su triet~.
• Adding a wildcard symbol may retrieve word variants: tu can ky nang x hoi. hieu ve ((cham tu) or (cam tu)) va hanh vi su triet*.