Perhaps you should try some spelling variations:
hieu mien » hieu hien, thieu nien, hieu tieng
dich goc » dich hoc, bich ngoc, dich nuoc
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
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
goc va » hoc va, loc va, doc va
cua tu » cua tuc, cua su, cua te
cua cu » cua chu, cua cau, cua su

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 mien dich goc va danh vi ((cua tu) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ky lang xa hoi. hieu mien dich goc va danh vi ((cua tu) OR (cua cu))*.