Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
tham luc » than luc, tham nuoc, tham thuc
va doanh » vay doanh, va danh, hoa doanh
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
tai cuu » tai cuc, tai buu, tai cua
cuu tre » cua tre, cau tren, cau treo
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ((ky lang) or (ky tang)) xa hoi. hieu va tham luc ((va doanh) OR (van doanh)) tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ((ky lang) OR (ky tang)) xa hoi. hieu va tham luc ((va doanh) OR (van doanh)) tai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ((ky lang) or (ky tang)) xa hoi. hieu va tham luc ((va doanh) OR (van doanh)) tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sac ((ky lang) or (ky tang)) xa hoi. hieu va tham luc ((va doanh) OR (van doanh)) tai cuu tre*.