Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
duong cong » luong cong, duong trong, trong cong
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
dung cong » dung trong
toan cao » toan ban, toan tap
tao cau » tao cu, tao cao, tao sau

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 - hanh tranh cua ((duong cong) OR (dung cong)) sang ((tao cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - hanh tranh cua ((duong cong) OR (dung cong)) sang ((tao cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh tranh cua ((duong cong) OR (dung cong)) sang ((tao cau) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh tranh cua ((duong cong) OR (dung cong)) sang ((tao cau) or (toan cao))*.