Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
truong cua » truong ca, truong quan, truong cao
dung chung » dung ung, dung trung, truong chung
hoc thieu » toc thieu, hoc hien
trung cap » truong cao, trung tam
dung cong » dung trong
doan tuan » doan quan, doanh luan, doan quang
tuan cu » tuan tu, quan cua, tuan thu

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 - thanh ((truong cua) or (trung cap)) ((dung chung) OR (dung cong)) doan tuan cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh ((truong cua) OR (trung cap)) ((dung chung) OR (dung cong)) doan tuan cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - thanh ((truong cua) or (trung cap)) ((dung chung) OR (dung cong)) doan tuan cu".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh ((truong cua) or (trung cap)) ((dung chung) OR (dung cong)) doan tuan cu*.