Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
va hang » van hang, va lang, va hanh
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sang - chinh doanh ((va hang) or (va nang)) huong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - chinh doanh ((va hang) OR (va nang)) huong dan toan cau*.