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, thong thong, phong chong
tong cong » trong cong, cong cong, dung cong
doanh va » doan va, doanh tai, doanh cua
van tan » van tuan, van ban, van tai
tan cau » toan cau, van cau, tan ca

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) OR (tong cong)) van tan 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) OR (tong cong)) van tan 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) OR (tong cong)) van tan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu quang) or (trien quang)) - hanh doanh va ((thong cong) OR (tong cong)) van tan cau*.