Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thien danh » thien anh, thien dang, thien chanh
cong thanh » dong thanh, cong trinh, cong tan
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong manh » cong danh, duong manh, hoang manh
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: hoc ((thien danh) OR (thien thanh)) - canh tranh cua nhung ((cong manh) OR (cong thanh)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien danh) OR (thien thanh)) - canh tranh cua nhung ((cong manh) or (cong thanh)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) OR (thien thanh)) - canh tranh cua nhung ((cong manh) or (cong thanh)) toan cau*.