Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
tan chat » van chat, tao chat, tan phat
ban chat » van chat, bao chat, luan chat

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 nhung cong ((tan chat) OR (ban chat)) cam~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh tranh cua nhung cong ((tan chat) OR (ban chat)) cam*.