Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cua trong » cua truong, cua trung, qua trong
lang toan » lang thang, lang thanh, quang toan
dang toan » dang tran, dan toan, dung toan

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - hanh tranh cua trong cong ((lang toan) OR (dang toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh tranh cua trong cong ((lang toan) OR (dang toan)) cau*.