Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doanh luan » doanh nhan
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
pham tai » pham thi, pham van
pham tu » phan tu, pham thi, pham duc

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - chinh ((doanh cua) or (doanh luan)) dung cong thanh ((pham tu) OR (pham tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - chinh ((doanh cua) OR (doanh luan)) dung cong thanh ((pham tu) OR (pham tai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - chinh ((doanh cua) or (doanh luan)) dung cong thanh ((pham tu) OR (pham tai))".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - chinh ((doanh cua) or (doanh luan)) dung cong thanh ((pham tu) OR (pham tai))*.