Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
canh doanh » chinh doanh, doanh doanh, kinh doanh
hanh doanh » hang doanh, chinh doanh, doanh doanh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
san phan » san pham, sat phan, dan phan
van phan » van phong, van thanh, luan phan
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 sang - ((canh doanh) or (hanh doanh)) va dung cong ((san phan) OR (van phan)) dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((canh doanh) OR (hanh doanh)) va dung cong ((san phan) OR (van phan)) dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - ((canh doanh) or (hanh doanh)) va dung cong ((san phan) OR (van phan)) dau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((canh doanh) or (hanh doanh)) va dung cong ((san phan) OR (van phan)) dau*.