Perhaps you should try some spelling variations:
trinh thuong » trinh phuong, trinh huong, trinh truong
trinh thong » trinh trong, trinh tong, trinh khong
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
cong tac » cong ty
tac doan » tap doan, tan doan, thai doan
doan cau » toan cau, doan dau, doan cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - thanh cong ((trinh thong) OR (trinh thuong)) cong tac doan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sang)) - thanh cong ((trinh thong) OR (trinh thuong)) cong tac doan cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sang)) - thanh cong ((trinh thong) OR (trinh thuong)) cong tac doan cau*.