Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
cong thanh » dong thanh, cong trinh, cong tan
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong san » cong tac
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: toc thieu xanh - canh tranh cua nhung ((cong san) or (cong thanh)) ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - canh tranh cua nhung ((cong san) OR (cong thanh)) ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - canh tranh cua nhung ((cong san) or (cong thanh)) ((toan cau) or (toan ban))*.