Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trung va » truong va, trung tam, trung cap
trung ha » trung hoc, trung tam, trung cap
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan 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 - thanh ((((trung va) OR (trung ha))) or (trang va)) nhung cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh ((((trung va) OR (trung ha))) OR (trang va)) nhung cong dan toan tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - thanh ((((trung va) OR (trung ha))) or (trang va)) nhung cong dan toan tap*".