Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
thien anh » thien danh, tien anh, thien thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua nhung » va nhung
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.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien anh) or (hieu manh)) - ((thanh trung) or (hanh trinh)) cua nhung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (hieu manh)) - ((thanh trung) OR (hanh trinh)) cua nhung cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (hieu manh)) - ((thanh trung) or (hanh trinh)) cua nhung cong dan toan cau*.