Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
chat cong » chat chong, chat long, chat song
trinh duc » tinh duc, trinh doc, trinh dung
duc phan » dung phan, duc thang, duc phung

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 manh)) - hanh tinh chat cong trinh duc phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu xanh) OR (hieu manh)) - hanh tinh chat cong trinh duc phan tu*.