Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh dai » thanh hai, thanh tai, thanh dat
van thanh » ban thanh, van tuan
thuoc van » thuoc va, thuc van, thuoc ban
nam thuoc » nam thuc, nam thu, nha thuoc
hieu va » lieu va, hieu qua
su sach » so sach, vu sach
hieu ve » hieu van
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa

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 y ((nang xa) OR (nang ma)) hoi. ((hieu ve) OR (hieu va)) nam thuoc van thanh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang xa) or (nang ma)) hoi. ((hieu ve) OR (hieu va)) nam thuoc van thanh dai cua triet~".
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang xa) or (nang ma)) hoi. ((hieu ve) OR (hieu va)) nam thuoc van thanh dai cua triet*.