Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hieu thien » hieu hien, chieu chien, dieu khien
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
hach tu » hanh tu, cach tu, sach tu
danh vi » hanh vi, danh di, danh va
dinh vi » dinh ve, dinh viet, dinh tri
sac ky » cac ky, sai ky
cua te » cua tu

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: tu ((sach ky) OR (sac ky)) nang xa hoi. hieu thien hach tu va ((danh vi) OR (dinh vi)) cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) nang xa hoi. hieu thien hach tu va ((danh vi) OR (dinh vi)) cua te~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) nang xa hoi. hieu thien hach tu va ((danh vi) OR (dinh vi)) cua te*.