Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thuc nang » chuc nang, thuc trang, thich nang
dang cua » dung cua, dong cua, hang cua
mang cua » manh cua, dung cua, ban cua
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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 ((hoat dong) OR (thuc nang)) - anh ((dang cua) OR (mang cua)) thuong cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hoat dong) or (thuc nang)) - anh ((dang cua) OR (mang cua)) thuong cong dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((hoat dong) or (thuc nang)) - anh ((dang cua) OR (mang cua)) thuong cong dan toan cau*.