Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
tieu tinh » trieu tinh, tieu trinh, lieu tinh
tang luan » dung luan
tang cua » mang cua, hang cua, thong cua
cong tan » cong tac, cong san, cong thanh
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 tieu tinh - hanh ((tang cua) OR (tang luan)) thuong cong tan ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - hanh ((tang cua) or (tang luan)) thuong cong tan ((toan cau) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - hanh ((tang cua) or (tang luan)) thuong cong tan ((toan cau) OR (toan tap))*.