Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thanh dung » thanh duong, thanh tung, thanh hung
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
cong bang » cuong bang, dong bang, cong lang
hong bang » dong bang, hang ban, hong hanh
dung cua » dung luan, dung cho
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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