Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
canh doanh » hanh doanh, chinh doanh, doanh doanh
hoc thieu » toc thieu, hoc hien
doanh va » doan va, doanh tai, doanh cua
cong tac » cong ty
hang dau » hang va, hang tai
va dung » van dung, va duong, vat dung

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 - canh doanh va dung ((cong san) OR (cong tac)) hang dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu quang - canh doanh va dung ((cong san) OR (cong tac)) hang dau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - canh doanh va dung ((cong san) OR (cong tac)) hang dau*.