Perhaps you should try some spelling variations:
hang dien » quang dien, dang dieu, nhan dien
thuc dan » thuc hanh, hoc dan, thuc vat
thuc day » thuc vat
dien cu » dien cuc, dien cua, dien tu
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua
hieu ve » hieu van
xang xa » lang xa, mang xa, ang xa
y xang » ty xang
cu tu » cau tu, chu tu, 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: so sach y xang xa hoi. ((hieu ve) or (hieu va)) bao ((thuc dan) or (thuc day)) hang dien cu tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y xang xa hoi. ((hieu ve) OR (hieu va)) bao ((thuc dan) OR (thuc day)) hang dien cu tu.
• Adding a wildcard symbol may retrieve word variants: so sach y xang xa hoi. ((hieu ve) or (hieu va)) bao ((thuc dan) or (thuc day)) hang dien cu tu*.