Perhaps you should try some spelling variations:
ve triet » va trien, su triet
van hanh » van thanh, ban hanh, van anh
ve cham » va cham, ve chat, vu cham
xuc van » duc van, luc van, vuc van
hoc sac » hoc sach, hoc cac, hoc mac
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky, sai ky
ve cai » va cai, ve cac, ve tai
ma hoi » mai hoi, xa hoi, ma hoa
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: hoc sac ky nang ma hoi. hieu ((ve cai) or (ve cham)) xuc van hanh vi ((cua tu) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sac ky nang ma hoi. hieu ((ve cai) OR (ve cham)) xuc van hanh vi ((cua tu) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: hoc sac ky nang ma hoi. hieu ((ve cai) or (ve cham)) xuc van hanh vi ((cua tu) or (ve triet))*.