Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
thong qua » thong quan, thong cua, duong qua
ho chieu » theo chieu, hoc thieu, doi chieu
thong tu » phong tuc, thong tin, thong ke
tay cao » tay co, toan cao
tao cao » bao cao, toan cao

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 - hanh tranh cua thong ((thong qua) OR (thong tu)) ((tay cao) OR (tao cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh tranh cua thong ((thong qua) OR (thong tu)) ((tay cao) or (tao cao))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh tranh cua thong ((thong qua) OR (thong tu)) ((tay cao) or (tao cao))*.