Perhaps you should try some spelling variations:
hien bach » vien bach, thien hach, hien hanh
bach nuoc » bach tuoc, sach nuoc, bich ngoc
hieu hien » bieu hien, dieu hien, chieu chien
so sach » so sanh, co sach, hoc sach
bo sach » co sach, hoc sach
nang xa » lang xa, nang ma, mang xa
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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