Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
phan dang » phan cong, nhan dan, phan ung
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
phan dau » phan tu, hang dau
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - canh tranh ((phan dang) OR (phan dau)) cong thanh ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - canh tranh ((phan dang) or (phan dau)) cong thanh ((toan cau) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - canh tranh ((phan dang) or (phan dau)) cong thanh ((toan cau) OR (toan tap))*.