Perhaps you should try some spelling variations:
nhung trong » hung trong, nhung tuong, thuong trong
thieu sang » chieu sang, thieu khang, thieu quang
doanh luan » doanh nhan
hoc thieu » toc thieu, hoc hien
trong van » trong cac
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap

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 - doanh ((doanh cua) or (doanh luan)) nhung trong van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - doanh ((doanh cua) OR (doanh luan)) nhung trong van toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - doanh ((doanh cua) or (doanh luan)) nhung trong van toan cau*.