Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
manh trung » thanh trung, manh hung, sinh trung
hoc thieu » toc thieu, hoc hien
manh tung » manh hung, thanh tung
hoc hang » hoc hanh, hoc bang, hoc tang
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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 - ((manh trung) or (manh tung)) hoc hang ((cong dan) OR (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((manh trung) OR (manh tung)) hoc hang ((cong dan) OR (cong san)) toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - ((manh trung) or (manh tung)) hoc hang ((cong dan) OR (cong san)) toan ban*".