Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh tranh » canh tranh, hanh trinh, hanh trang
trong long » trong luong, truong long, trong nong
tranh cua » doanh cua, manh cua
doc hieu » toc thieu, hoc thieu, hoc hien
tuan cau » toan cau, quan cau, tuan cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu nganh - hanh tranh cua ((trong cong) or (trong long)) anh tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - hanh tranh cua ((trong cong) OR (trong long)) anh tuan cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - hanh tranh cua ((trong cong) or (trong long)) anh tuan cau*.