Perhaps you should try some spelling variations:
van dinh » van minh, van dich, va dinh
thuc van » thuc vat, thuc dan, thuc va
su sach » so sach, vu sach
dinh vi » dinh ve, dinh viet, dinh tri
van bac » van ban, van bao, van hac
van cac » van hac, van cau, dan cac
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sanh)) ly nang xa hoi. hieu ((van cac) OR (van bac)) thuc van dinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) ly nang xa hoi. hieu ((van cac) OR (van bac)) thuc van dinh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) ly nang xa hoi. hieu ((van cac) OR (van bac)) thuc van dinh vi cua tre*".