Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
tranh cua » doanh cua, manh cua
cua khong » hua khong, cua phuong, cua thuong
chi xanh » chi anh, chi danh, chi hanh
cong tan » cong tac, cong san, cong ty
toan cao » toan ban
toan tap » toan 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 - canh tranh cua khong ((cong tan) or (cong thanh)) ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - canh tranh cua khong ((cong tan) OR (cong thanh)) ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - canh tranh cua khong ((cong tan) or (cong thanh)) ((toan cao) or (toan tap))*.