Perhaps you should try some spelling variations:
dang xay » dang van, van xay
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
su sach » vu sach
dang xa » lang xa, dang ha, dang va
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
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 sach)) ky ((dang xa) OR (dang xay)) hoi. hieu van cam xuc va thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky ((dang xa) OR (dang xay)) hoi. hieu van cam xuc va thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ky ((dang xa) OR (dang xay)) hoi. hieu van cam xuc va thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky ((dang xa) OR (dang xay)) hoi. hieu van cam xuc va thanh vi cua tre*.