Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
doanh qua » doanh quan, doanh cua, danh qua
doan quan » doan quang, dan quan, toan quan
cong dan » cong san, cong tan, huong dan
phan cac » nhan cach, phan dau, phan lap

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 qua) or (doan quan)) thong cong dan ((phan tu) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - doanh ((doanh qua) OR (doan quan)) thong cong dan ((phan tu) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - doanh ((doanh qua) or (doan quan)) thong cong dan ((phan tu) or (phan cac))*.