Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
tong cong » trong cong, cong cong, dung cong
thanh va » thanh van, hanh va, thanh ve
thanh ha » thanh hoa, thanh hai, nhanh ha
cong san » cong tac
san toan » van toan, dan toan, manh toan
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 - danh ((thanh va) OR (thanh ha)) tong cong san toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - danh ((thanh va) OR (thanh ha)) tong cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - danh ((thanh va) OR (thanh ha)) tong cong san toan ban*.