Perhaps you should try some spelling variations:
truong long » trong long, trung long, truong cong
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hieu manh » chieu xanh, dieu hanh, hien hanh
tranh cua » doanh cua, manh cua
manh toan » thanh toan, anh tuan, tinh toan
toan cau » toan cao, toan ban, toan tap

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) OR (hieu manh)) - hanh tranh cua ((trong cong) or (truong long)) manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (hieu manh)) - hanh tranh cua ((trong cong) OR (truong long)) manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu nganh) OR (hieu manh)) - hanh tranh cua ((trong cong) or (truong long)) manh toan cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) OR (hieu manh)) - hanh tranh cua ((trong cong) or (truong long)) manh toan cau*.