Perhaps you should try some spelling variations:
tranh quang » tran quang, trinh quang, tinh quang
thieu xanh » chieu xanh, thien anh, thien danh
quang dung » quang trung, ung dung, cuong dung
hieu manh » chieu xanh, hieu nganh, dieu hanh
trong tan » trong quan, trong cac, trong ca
kim ngan » kim ngoc
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu

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 xanh) or (((hieu manh) or (kim ngan)))) - canh tranh quang dung trong tan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (((hieu manh) OR (kim ngan)))) - canh tranh quang dung trong tan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (((hieu manh) or (kim ngan)))) - canh tranh quang dung trong tan phan cau*.