Perhaps you should try some spelling variations:
cong nganh » cong ngang, trong nganh, duong nganh
nhung cong » dung cong, thong cong, hang cong
nganh toan » nganh thanh, thanh toan, manh toan
hoc thiet » hoc thieu, hoc thuyet, toc thieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
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: ((hoc thiet) or (hoc hien)) tach - canh tranh cua nhung cong nganh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (hoc hien)) tach - canh tranh cua nhung cong nganh toan cau*.