Perhaps you should try some spelling variations:
xuan truong » xa truong, duong truong
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
cua thuong » cua truong, cua phuong, ca thuong
hoc thieu » toc thieu, hoc hien
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
chan ban » can ban, chat ban, chan nan

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 trung ((cua thuong) or (xuan truong)) ((cong dan) or (cong tan)) chan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh trung ((cua thuong) OR (xuan truong)) ((cong dan) OR (cong tan)) chan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh trung ((cua thuong) or (xuan truong)) ((cong dan) or (cong tan)) chan ban*.