Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
dang xay » dang van, van xay
danh lai » danh sai, gianh lai, dinh lam
hieu van » hieu va, thien van, lieu va
lang xa » lang ha, lang van
sach ty » sach y, sach tu, sach thu
van cam » van nam, van lam, van cau
va danh » va dinh, va dan, va hanh
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ty ((lang xa) or (dang xay)) hoi. hieu van cam xuc va danh lai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ty ((lang xa) OR (dang xay)) hoi. hieu van cam xuc va danh lai ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ty ((lang xa) or (dang xay)) hoi. hieu van cam xuc va danh lai ((cua tre) OR (cuu tre))*".