Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc 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 hac, van cau, van bac
va hanh » van hanh, va thanh, va danh
van hai » van ha, van chat, van hanh
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
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 hai)) xuc va 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 hai)) xuc va 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 hai)) xuc va hanh vi ((cua te) or (ve triet))*.