Perhaps you should try some spelling variations:
thuong phuong » truong phuong, thong phuong, thong thuong
chieu xanh » chieu sach, chieu sang, chieu tinh
phuong dan » phuong danh, phuong doan, huong dan
doi chieu » doc hieu, doi chi, ho chieu
toan cao » toan tap
toan ban » van ban
nhan va » nhan tai, nhan dan, nhan tao
han va » hang va, hanh va, ban va

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: doi chieu xanh - hanh ((han va) OR (nhan va)) thuong phuong dan ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh ((han va) OR (nhan va)) thuong phuong dan ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh ((han va) OR (nhan va)) thuong phuong dan ((toan cao) or (toan ban))*.