Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
trinh cua » trinh luat, trinh quan, trinh luan
cong manh » cong danh, duong manh, cong thanh
30 trieu » 25 trieu
tinh cua » sinh cua, tinh chat, tranh cua
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: 30 trieu tinh - nhanh ((tinh cua) OR (trinh cua)) thong cong manh ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "30 trieu tinh - nhanh ((tinh cua) OR (trinh cua)) thong cong manh ((toan cau) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - nhanh ((tinh cua) OR (trinh cua)) thong cong manh ((toan cau) or (toan tap))*.