Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
thong cong » trong cong, tong cong, thong thong
tieu danh » dieu danh, tiep danh, thien danh
cua thong » cua thuong, cua khong, cua tong
cong tran » cong tan, cong tuan, cong toan
tran van » luan van
van tai » von tai, van tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu danh - ((canh tranh) or (manh trung)) cua thong cong tran van tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu danh - ((canh tranh) OR (manh trung)) cua thong cong tran van tai.
• Adding a wildcard symbol may retrieve word variants: theo tieu danh - ((canh tranh) or (manh trung)) cua thong cong tran van tai*.