Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
canh doanh » hanh doanh, chinh doanh, kinh doanh
thong cong » trong cong, tong cong, thong thong
va thong » va thuong, va phuong, he thong
cong van » cong vang, cong san, song van
theo bo » thao bo, theo doi, theo don
van tan » van tuan, van ban, van tai
tan cau » toan cau, van cau, tan ca
ho toc » hoa toc, co toc, so toc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho toc) or (theo bo)) sach - ((canh doanh) OR (doanh doanh)) va thong cong van tan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho toc) OR (theo bo)) sach - ((canh doanh) OR (doanh doanh)) va thong cong van tan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho toc) or (theo bo)) sach - ((canh doanh) OR (doanh doanh)) va thong cong van tan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho toc) or (theo bo)) sach - ((canh doanh) OR (doanh doanh)) va thong cong van tan cau*.