Perhaps you should try some spelling variations:
loai hoc » logic hoc, loai khoa, dai hoc
va hanh » van hanh, va thanh, va danh
lai hoi » dai hoi, lai hoa, lai roi
hieu vu » hieu ve, hieu su, dieu vu
ky sang » ky nang, ky dang, ky tang
hanh di » hanh vi, hanh de, hang di
hieu va » lieu va, hieu qua
tu van » tu va
di cua » dai cua, doi cua, de cua
cua te » cua tu
xuc va » duc va, tuc va, luc va

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 van ky sang ((lai hoi) OR (loai hoc)). ((hieu vu) OR (hieu va)) cam xuc va hanh di cua te~.
• Adding a wildcard symbol may retrieve word variants: tu van ky sang ((lai hoi) or (loai hoc)). ((hieu vu) or (hieu va)) cam xuc va hanh di cua te*.