Perhaps you should try some spelling variations:
chieu tach » chieu sach, chiu trach, chieu tinh
chiet tach » chieu sach
trinh cua » trinh luat, trinh quan, trinh luan
dung cong » dung trong
tinh cua » sinh cua, tinh chat, tranh cua
toan cau » toan cao, toan ban, toan tap
ty toan » ly toan, tap toan, huy toan

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: ho ((chieu tach) OR (chiet tach)) - hanh ((trinh cua) OR (tinh cua)) dung cong ty toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tach) or (chiet tach)) - hanh ((trinh cua) OR (tinh cua)) dung cong ty toan cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tach) or (chiet tach)) - hanh ((trinh cua) OR (tinh cua)) dung cong ty toan cau*.