Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
doanh va » doan va, doanh tai, doanh cua
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban

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 - chinh doanh va ((hang cong) or (bang cong)) dan ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - chinh doanh va ((hang cong) OR (bang cong)) dan ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - chinh doanh va ((hang cong) or (bang cong)) dan ((toan tai) or (toan ban))*.