Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh tranh » canh tranh, hanh trinh, hanh trang
cong quang » luong quang, thong quang, duong quang
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong van » cong vang, cong san, song van
tan cau » toan cau, van cau, tan ca

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 - hanh tranh cua nhung ((cong van) or (cong quang)) tan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh tranh cua nhung ((cong van) OR (cong quang)) tan cau*.