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 qua » tranh cua, thanh qua, trinh qua
dung cong » dung trong
qua dung » quang dung, su dung, qua song
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh tranh qua dung cong ((((dan than) OR (dan chan))) OR (tan tran)) tap~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh tranh qua dung cong ((((dan than) or (dan chan))) or (tan tran)) tap*.