Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
hanh nuoc » hanh duoc, hanh thuoc, khanh quoc
hien hanh » dieu hanh
dinh tri » chinh tri
dinh vi » dinh ve, dinh viet, dinh thi
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cua tuc » cua duc, cua tu, cua thuoc

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: so sach ty ((nang xa) OR (nang ma)) hoi. bieu hien hanh nuoc va ((dinh vi) OR (dinh tri)) cua tuc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty ((nang xa) OR (nang ma)) hoi. bieu hien hanh nuoc va ((dinh vi) or (dinh tri)) cua tuc~".
• Adding a wildcard symbol may retrieve word variants: so sach ty ((nang xa) OR (nang ma)) hoi. bieu hien hanh nuoc va ((dinh vi) or (dinh tri)) cua tuc*.