Perhaps you should try some spelling variations:
tcvn trinh » tien trinh
hanh trang » thanh trung, canh tranh, hanh trinh
cong thanh » dong thanh, cong trinh, cong tan
duong manh » duong van
trang cua » tranh cua, tang cua, trung 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.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tcvn trinh - hanh trang cua cong ((cong thanh) or (duong manh)) ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tcvn trinh - hanh trang cua cong ((cong thanh) OR (duong manh)) ((toan cau) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tcvn trinh - hanh trang cua cong ((cong thanh) or (duong manh)) ((toan cau) OR (toan ban))*".