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
cong toan » cong tan, cong tuan, cong doan
cong hoan » cong hoa, dong hoa, cong san
cua bang » chua bang, cua ban, cua dang
ban cau » bang cau, ban can, van cau

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 bang ((cong toan) OR (cong hoan)) ban cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh tranh cua bang ((cong toan) OR (cong hoan)) ban cau*.