Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
hieu van » hieu va, thien van, lieu va
dua tren » dung tren
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
nam xua » nam cua, nam mua, nam qua
ban anh » ban hanh, ban banh, ban danh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cua te » cua tu

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 van nam xua ((ban anh) OR (ban doanh)) ve ((dua tren) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky lang xa hoi. hieu van nam xua ((ban anh) OR (ban doanh)) ve ((dua tren) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang xa hoi. hieu van nam xua ((ban anh) OR (ban doanh)) ve ((dua tren) OR (cua te))*.