Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
hoc khien » hoc hien, hoc nghien, hoc thieu
cua thong » cua thuong, cua khong, cua tong
chua dong » cua dong, ha dong, huy dong
cong san » cong tac
san toan » van toan, dan toan, manh 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: hoc khien tinh - canh tranh ((cua thong) or (chua dong)) cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien tinh - canh tranh ((cua thong) OR (chua dong)) cong san toan cau*.