Perhaps you should try some spelling variations:
thanh le » thanh ve, thanh de, thanh liem
thinh le » trinh ly
nam thuc » nam thuoc, am thuc, nam thu
thuc ban » thuoc ban, thuc dan, thu ban
su sach » so sach, vu sach
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty lang xa hoi. ((hieu ve) OR (hieu va)) nam thuc ban ((thanh le) OR (thinh le)) cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty lang xa hoi. ((hieu ve) OR (hieu va)) nam thuc ban ((thanh le) or (thinh le)) cua vat~".
• Adding a wildcard symbol may retrieve word variants: su sach ty lang xa hoi. ((hieu ve) OR (hieu va)) nam thuc ban ((thanh le) or (thinh le)) cua vat*.