Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
danh vi » hanh vi, danh di, danh va
cua tre » cua te, cua triet, dua tren
dinh vi » dinh ve, dinh viet, dinh tri
bac tuc » bac tu, bach tuoc, bac thua
van bac » van ban, van bao, van hac
nang xa » nang x, lang xa, nang ma
cuu tre » cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu van bac tuc va ((danh vi) OR (dinh vi)) ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu van bac tuc va ((danh vi) OR (dinh vi)) ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu van bac tuc va ((danh vi) OR (dinh vi)) ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu van bac tuc va ((danh vi) OR (dinh vi)) ((cua tre) or (cuu tre))*.