Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh trang » thanh trung, canh tranh, hanh trinh
trang dan » trang doan, tang dan, trong dan
tdung lam » truong lam, trong lam, duong lam
dan dung » van dung, tin dung, ap dung
dung lam » dung luan, dung tai, dung dat

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sang - hanh trang dan dung ((tdung lam) or (dung lam)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - hanh trang dan dung ((tdung lam) OR (dung lam)) phan tu.
• Adding a wildcard symbol may retrieve word variants: toc thieu sang - hanh trang dan dung ((tdung lam) or (dung lam)) phan tu*.