Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
nang mai » nang ma, nang tai, lang mai
mai hoi » mai khoi, dai hoi, lai hoi
van cac » van cau, van bac, dan cac
xuc van » duc van, luc van, vuc van
van hac » van hoc, van ha, van hai
y nang » ky nang, ly nang, v nang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach y nang mai hoi. hieu ((van cac) or (van hac)) xuc van hanh vi ((cua te) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach y nang mai hoi. hieu ((van cac) OR (van hac)) xuc van hanh vi ((cua te) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang mai hoi. hieu ((van cac) or (van hac)) xuc van hanh vi ((cua te) or (ve triet))*.