Perhaps you should try some spelling variations:
trinh vi » trinh va, trinh ve, trinh viet
cua viet » hoa viet, cua vat, cua dieu
ca viet » va viet, co viet, hoa viet
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
loc may » hoc may, loai may, loc xoay
so sac » so sach, so dac
ve cac » va cac, vien cac
sac ky » cac ky, sai ky

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: so sac ky lang xa hoi. hieu ve cac ((loc may) OR (loc mau)) trinh vi ((cua viet) OR (ca viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky lang xa hoi. hieu ve cac ((loc may) OR (loc mau)) trinh vi ((cua viet) or (ca viet))~".
• Adding a wildcard symbol may retrieve word variants: so sac ky lang xa hoi. hieu ve cac ((loc may) OR (loc mau)) trinh vi ((cua viet) or (ca viet))*.