Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh xuat » trinh luat, trich xuat, trinh xay
trinh xuan » trinh quan, trinh luan, trinh luat
thong van » trong van, thong va, thong quan
chuan dao » chuan doan, chuan iso, chuan ha
ho chieu » theo chieu, hoc thieu, doi chieu
huan cao » juan cao, quang cao, hoang 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 ((trinh xuat) OR (trinh xuan)) thong thong van ((huan cao) OR (chuan dao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh ((trinh xuat) OR (trinh xuan)) thong thong van ((huan cao) or (chuan dao))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((trinh xuat) OR (trinh xuan)) thong thong van ((huan cao) or (chuan dao))*.