Perhaps you should try some spelling variations:
hien bich » phien dich, chien dich, mien dich
hieu hien » bieu hien, dieu hien, chieu chien
bich ngoc » bich nga, dinh ngoc
co sach » bo sach, cuon sach, hoc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
ngoc va » nuoc va, ngoc ha, goc va
danh di » danh du, xanh di, danh dien
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 hoi. hieu hien bich ngoc va ((danh di) or (((dinh tri) OR (chinh tri)))) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ky lang xa hoi. hieu hien bich ngoc va ((danh di) OR (((dinh tri) OR (chinh tri)))) cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach ky lang xa hoi. hieu hien bich ngoc va ((danh di) or (((dinh tri) OR (chinh tri)))) cua tu*".