Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nam xuc » cam xuc, nam xua, nam thuc
xuc may » xuc hay, truc may, phuc may
tinh di » tinh doi, trinh di, tinh da
cua tre » cua te, cuu tre, cua triet
co hoi » co hoc
di cua » dai cua, doi cua, de 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 ky nang ((((co hoi) or (co loi))) or (xa hoi)). hieu van nam xuc may tinh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((((co hoi) OR (co loi))) OR (xa hoi)). hieu van nam xuc may tinh di cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((((co hoi) or (co loi))) or (xa hoi)). hieu van nam xuc may tinh di cua tre*.