Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
trinh quan » tinh quang, trinh luat, trinh han
hieu xanh » chieu xanh, hieu manh, hieu nganh
quan dung » quang dung, quan duong, qua dung
cong tuan » cong tan, cong luan, cong thanh
tong luan » tang luan, dung luan, hang luan
doc hieu » toc thieu, hoc thieu, hoc hien
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: doc hieu xanh - canh trinh quan dung ((cong tuan) or (tong luan)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh trinh quan dung ((cong tuan) OR (tong luan)) phan cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh trinh quan dung ((cong tuan) or (tong luan)) phan cau*.