Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
bach nuoc » bach tuoc, sach nuoc, bich ngoc
hien bach » vien bach, thien hach, hien hanh
dang xay » dang van, van xay
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
sach ty » sach y, sach tu, sach thu
bo sach » co sach, hoc sach
mang xa » lang xa, mang may, mang cua
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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