Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, hieu quan
trien quang » tran quang, tuyen quang, dien quang
hanh doanh » hang doanh, chinh doanh, doanh doanh
thong cong » trong cong, tong cong, thong thong
doanh va » doan va, doanh tai, doanh cua
va thong » va thuong, va phuong, he thong
cong van » cong vang, cong san, song van
tan cau » toan cau, tan ca, tao cau
van cau » van dau, van hau, van chat

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

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