Perhaps you should try some spelling variations:
danh doanh » doanh doanh, hanh doanh, kinh doanh
cham hoc » cham soc, chat hoc, cham hoi
hoc danh » hoc dan, hoc anh, hoc hanh
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tai duc » tai cuc, mai duc, tai du
duc tre » duoc tren, duc tien
tu sac » tu sach, tu cac, tu san

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky lang) OR (ky nang)) xa hoi. hieu ve cham hoc danh doanh tai duc tre~".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky lang) OR (ky nang)) xa hoi. hieu ve cham hoc danh doanh tai duc tre*.