Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thieu sang » chieu sang, thieu quang, hieu lang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu sang) OR (thieu khang)) - ((hanh tang) OR (hanh trinh)) cua nhung cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thieu sang) OR (thieu khang)) - ((hanh tang) or (hanh trinh)) cua nhung cong dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: toc ((thieu sang) OR (thieu khang)) - ((hanh tang) or (hanh trinh)) cua nhung cong dan toan cau*.