Perhaps you should try some spelling variations:
trung cong » truong cong, trong cong, trung uong
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua trung » cua truong, xuan trung, cua nhung
chi xanh » chi anh, chi danh, chi hanh
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - hanh tranh cua trung cong trinh ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - hanh tranh cua trung cong trinh ((toan cau) OR (toan ban))*.