Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
dang trong » dung trong, dong trong, lang trong
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
trong dan » trong dang, trong san, trong tan
cua dang » cua cong, cua ban
dan phan » doan phan, dan chan, van phan

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 xanh) or (hieu lang)) - hanh tranh cua dang trong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu xanh) OR (hieu lang)) - hanh tranh cua dang trong dan phan tu*.