Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dinh tri » chinh tri
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
danh di » danh du, xanh di, danh dien
cua tre » cuu tre, cua triet, dua tren
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: su sach ky nang xa hoi. hieu van cam xuc va ((dinh tri) or (danh di)) ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu van cam xuc va ((dinh tri) OR (danh di)) ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu van cam xuc va ((dinh tri) or (danh di)) ((cua tre) or (cua te))*.