Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
ho chieu » theo chieu, hoc thieu, doi chieu
anh dong » anh huong, anh son
dong cua » dung cua, cong cua, huong cua
vat cong » bat cong, sat cong, vat con
toan cao » toan tap
toan ban » van ban

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 - anh dong cua vat cong trinh ((toan cao) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - anh dong cua vat cong trinh ((toan cao) or (toan ban))*.