Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien bach » vien bach, thien hach, hien hanh
bach nuoc » bach tuoc, sach nuoc, bich ngoc
ky lang » ky dang, ky tang, tay lang
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
co sac » co sach, co cac, cao sach
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: co sac ((ky lang) OR (ky nang)) xa hoi. hieu hien bach nuoc va danh vi ((cua tu) OR (cua cu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sac ((ky lang) or (ky nang)) xa hoi. hieu hien bach nuoc va danh vi ((cua tu) OR (cua cu))~".
• Adding a wildcard symbol may retrieve word variants: co sac ((ky lang) or (ky nang)) xa hoi. hieu hien bach nuoc va danh vi ((cua tu) OR (cua cu))*.