Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doanh khoa » toan khoa
nhung cong » thong cong, hang cong, nhung don
dung cong » dung trong
nhan cach » phan cac
ho chieu » theo chieu, hoc thieu, doi chieu
khoa cua » hoa cua, kho cua, khoe cua
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: ho chieu xanh - doanh khoa cua ((nhung cong) OR (dung cong)) tan ((phan cau) or (nhan cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - doanh khoa cua ((nhung cong) OR (dung cong)) tan ((phan cau) OR (nhan cach)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - doanh khoa cua ((nhung cong) OR (dung cong)) tan ((phan cau) or (nhan cach))".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - doanh khoa cua ((nhung cong) OR (dung cong)) tan ((phan cau) or (nhan cach))*.