Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
doanh van » doan van, doanh va, doanh ban
va triet » va thiet, va trien, ve triet
cac thuc » cach thuc, cac thu, can thuc
va doanh » van doanh, vay doanh, va danh
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, dua tren
ky lang » ky nang, ky dang, ky tang
te sach » toc sach
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang xa hoi. hieu ve cac thuc va doanh van ((cua tre) or (((cua triet) OR (va triet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu ve cac thuc va doanh van ((cua tre) OR (((cua triet) OR (va triet))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. hieu ve cac thuc va doanh van ((cua tre) or (((cua triet) OR (va triet))))*".