Perhaps you should try some spelling variations:
cong thuong » hang thuong
dung thuong » dung trong, hang thuong, dung thuoc
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh suat » trinh luat, trinh sat, trinh quan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - hanh trinh suat ((dung thuong) or (cong thuong)) dam ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh trinh suat ((dung thuong) OR (cong thuong)) dam ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh trinh suat ((dung thuong) or (cong thuong)) dam ((toan cau) or (toan tap))*.