Perhaps you should try some spelling variations:
thong thuong » thong thong, hang thuong, cong thuong
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hanh tranh » canh tranh, hanh trinh, hanh trang
thong dung » thong cong
hieu manh » chieu xanh, dieu hanh, hien hanh
tranh cua » doanh cua, manh cua
manh toan » thanh toan, anh tuan, tinh toan
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 ((hieu manh) OR (hieu nganh)) - hanh tranh cua ((thong thuong) or (thong dung)) manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu nganh)) - hanh tranh cua ((thong thuong) OR (thong dung)) manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (hieu nganh)) - hanh tranh cua ((thong thuong) or (thong dung)) manh toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (hieu nganh)) - hanh tranh cua ((thong thuong) or (thong dung)) manh toan tap*.