Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
chau tinh » cuu tinh, ha tinh, cua tinh
luan bang » luan ban, luan tang, tuan bang
luan nang » luan van, van nang, luan san
cong manh » cong danh, duong manh, cong thanh
toan ban » van ban
toan cao » toan tap
ho chau » ha chau, ho chu, o chau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chau tinh - hanh doanh ((luan bang) OR (luan nang)) cong manh ((toan ban) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chau tinh - hanh doanh ((luan bang) OR (luan nang)) cong manh ((toan ban) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chau tinh - hanh doanh ((luan bang) OR (luan nang)) cong manh ((toan ban) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ho chau tinh - hanh doanh ((luan bang) OR (luan nang)) cong manh ((toan ban) or (toan cao))*.