Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
cao thuong » cao truong, cho thuong, chan thuong
hoc thieu » toc thieu, hoc hien
ca thuong » cua thuong, va thuong, cp thuong
phan cau » phan dau, phan cac, phan tu
con dan » cong dan, co dan, con day
con ban » con bang, co ban, can 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 ((cao thuong) or (ca thuong)) ((con dan) or (con ban)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh trung ((cao thuong) OR (ca thuong)) ((con dan) OR (con ban)) phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh trung ((cao thuong) or (ca thuong)) ((con dan) or (con ban)) phan cau*.