Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien bich » phien dich, chien dich, mien dich
bich ngoc » bich nga, dinh ngoc
dang xay » dang van, van xay
dinh vi » dinh ve, dinh viet, dinh tri
danh vi » hanh vi, danh di, danh va
ngoc va » nuoc va, ngoc ha, goc va
co sach » bo sach, cuon sach, hoc sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, lang van
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ky ((lang xa) OR (dang xay)) hoi. hieu hien bich ngoc va ((danh vi) or (dinh vi)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ky ((lang xa) OR (dang xay)) hoi. hieu hien bich ngoc va ((danh vi) OR (dinh vi)) cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach ky ((lang xa) OR (dang xay)) hoi. hieu hien bich ngoc va ((danh vi) or (dinh vi)) cua tu*".