Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
tuan trong » thuan trong, quan trong, tran trong
hoc thieu » toc thieu, hoc hien
toan tuan » tran tuan, toan quan, doan tuan
thanh chu » thanh chau, thanh cha, thanh thu
thanh lap » thanh san, phan lap, thanh hai
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh cac, than cua

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 - tinh toan tuan trong cong tan ((thanh chu) or (((than cap) OR (thanh lap))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - tinh toan tuan trong cong tan ((thanh chu) OR (((than cap) OR (thanh lap))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - tinh toan tuan trong cong tan ((thanh chu) or (((than cap) OR (thanh lap))))*".