Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh tranh » canh tranh, hanh trinh, hanh trang
hien tach » thien hach, chiet tach, vien bach
tranh cua » doanh cua, manh cua
dung cong » dung trong
van toan » van tuan, van tan, van thanh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tach - hanh tranh cua ((dung cong) or (thong cong)) van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tach - hanh tranh cua ((dung cong) OR (thong cong)) van toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc hien tach - hanh tranh cua ((dung cong) or (thong cong)) van toan tap*.