Perhaps you should try some spelling variations:
thuong huong » thuong phuong, thuong luong, thong huong
cua thuong » cua truong, cua phuong, ca thuong
hiem ngan » kim ngan
manh hung » anh huong
hung cua » huong cua, chung cua, khung 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: doc ((hiem ngan) OR (viem gan)) - manh hung cua thuong huong dan ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hiem ngan) OR (viem gan)) - manh hung cua thuong huong dan ((toan cau) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: doc ((hiem ngan) OR (viem gan)) - manh hung cua thuong huong dan ((toan cau) or (toan ban))*.