Perhaps you should try some spelling variations:
dang thuong » hang thuong, dung thuong, dong thuong
dang huong » dang hung, dong huong, dang cuong
van hanh » van thanh, ban hanh, van anh
hanh cua » manh cua, hang cua, hanh sua
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
ho lieu » so lieu, co lieu, ho kieu
co hieu » cao hieu, doc hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho lieu) or (co hieu)) tinh - van hanh cua ((dang huong) or (dang thuong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho lieu) OR (co hieu)) tinh - van hanh cua ((dang huong) OR (dang thuong)) dan toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) or (co hieu)) tinh - van hanh cua ((dang huong) or (dang thuong)) dan toan cau*.