Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
quang dung » quang trung, ung dung, cuong dung
hoc thieu » toc thieu, hoc hien
canh tinh » hanh tinh, manh tinh, canh tranh
than phan » thanh phan, toan phan, thanh pham
tan phan » toan phan, van phan, tai phan

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh tinh quang dung trong ((tan phan) OR (than phan)) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tinh quang dung trong ((tan phan) OR (than phan)) cau*.