Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
cham cuu » cap cuu, chat cua
lang van » dang van, tang van, hoang van
vai cua » dai cua, hai cua, lai cua
cuu ban » cuu van, cua ban, cuu san
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
van hoi » van hoa, van hoc, van hoe
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
di cua » dai cua, doi cua, de cua
tu sac » tu sach, tu cac, tu san

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 van hoi. hieu ve cham cuu ban doanh ((((vi cua) OR (di cua))) or (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang van hoi. hieu ve cham cuu ban doanh ((((vi cua) OR (di cua))) OR (vai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky lang van hoi. hieu ve cham cuu ban doanh ((((vi cua) OR (di cua))) or (vai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang van hoi. hieu ve cham cuu ban doanh ((((vi cua) OR (di cua))) or (vai cua)) triet*.