Perhaps you should try some spelling variations:
chieu chien » thien chien
hieu hien » bieu hien, dieu hien, dieu khien
cua chua » sua chua, cua chu, cua nhua
dinh cua » dinh cuu, sinh cua, dinh cu
chua tre » chua tri, cua tre, chua trieu
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
lao va » cao va, bao va, dao va
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang xa hoi. ((hieu hien) or (chieu chien)) cac ((lao va) or (tao va)) dinh cua chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang xa hoi. ((hieu hien) OR (chieu chien)) cac ((lao va) OR (tao va)) dinh cua chua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang xa hoi. ((hieu hien) or (chieu chien)) cac ((lao va) or (tao va)) dinh cua chua tre*.