Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hang doanh » hanh doanh, nhung doanh, dung doanh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
van doanh » toan doanh, van dong, van thanh
cua thong » cua thuong, cua khong, cua tong
dan than » dan chan, ban than, van than
van tuan » van quan, van ban, anh tuan

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 - ((hang doanh) OR (van doanh)) cua thong cong ((dan than) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((hang doanh) OR (van doanh)) cua thong cong ((dan than) OR (van tuan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - ((hang doanh) OR (van doanh)) cua thong cong ((dan than) or (van tuan)) cau*".