Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
cong ngang » cong nhan, cong quang, cong lang
tang cua » mang cua, tang luan, thong cua
hang cua » mang cua, hang ca, huong cua
toan cau » toan cao, toan tap, toan tai
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: theo chieu xanh - hanh ((tang cua) OR (hang cua)) thuong cong ngang ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - hanh ((tang cua) OR (hang cua)) thuong cong ngang ((toan cau) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh ((tang cua) OR (hang cua)) thuong cong ngang ((toan cau) or (toan ban))*.