Perhaps you should try some spelling variations:
doanh ban » doanh bat, doanh nhan, doanh luan
doanh van » doan van, doanh va, doanh nhan
cau treo » cau theo, cau tren, cau triet
hieu van » hieu va, thien van, lieu va
ba truc » cau truc, ba trung, dai truc
truc va » thuc va, thuc vat, trung va
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren
te sach » toc sach
van ba » van ban, van bao, van bac
ma hoi » mai hoi, xa hoi, ma hoa

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 nang ma hoi. hieu van ba truc va ((doanh van) or (doanh ban)) ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. hieu van ba truc va ((doanh van) OR (doanh ban)) ((cuu tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. hieu van ba truc va ((doanh van) or (doanh ban)) ((cuu tre) OR (cau treo))*".