Perhaps you should try some spelling variations:
su triet » su tien, ve triet
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
danh va » doanh va, hanh va, anh va
su viet » so viet
tu sac » tu sach, tu cac, tu san
ve cam » ve cham, ve cac, va cam
cam tu » cam thu, nam tu, dam tu

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: tu sac ((ky lang) OR (ky tang)) xa hoi. hieu ve cam tu va danh va ((su triet) OR (su viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky lang) or (ky tang)) xa hoi. hieu ve cam tu va danh va ((su triet) OR (su viet))~".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky lang) or (ky tang)) xa hoi. hieu ve cam tu va danh va ((su triet) OR (su viet))*.