Perhaps you should try some spelling variations:
trong thuong » thong thuong, trong tuong, cong thuong
trong huong » trong chuong, truong huong, thong huong
hanh tranh » canh tranh, hanh trinh, hanh trang
hien sang » hien trang, khien bang, chieu sang
tranh cua » doanh cua, manh cua
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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 sang - hanh tranh cua ((trong huong) or (trong thuong)) dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sang - hanh tranh cua ((trong huong) OR (trong thuong)) dan than cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien sang - hanh tranh cua ((trong huong) or (trong thuong)) dan than cao*.