Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
ky tang » ky nang, ky dang, kho tang
dai hoi » dai hoc, dai hai, dai moi
lai hoa » dai hoa, loai hoc
hieu vu » hieu va, hieu ve, hieu su
tu sac » tu sach, tu cac, tu san
vu cam » vu cham, vu cao, va cam
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky tang ((dai hoi) or (lai hoa)). hieu vu cam xuc van hanh vi ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang ((dai hoi) OR (lai hoa)). hieu vu cam xuc van hanh vi ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang ((dai hoi) or (lai hoa)). hieu vu cam xuc van hanh vi ((cua te) or (cua tu))*.