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
dinh tri » chinh tri
danh vi » hanh vi, dinh vi, danh di
ngoc va » nuoc va, ngoc ha, goc va
sach ky » sach y, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
sac ky » cac ky, sai ky
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) OR (sac ky)) lang xa hoi. hieu hien bich ngoc va ((danh vi) or (dinh tri)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co ((sach ky) OR (sac ky)) lang xa hoi. hieu hien bich ngoc va ((danh vi) OR (dinh tri)) cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co ((sach ky) OR (sac ky)) lang xa hoi. hieu hien bich ngoc va ((danh vi) or (dinh tri)) cua tu*".