Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
ho chieu » theo chieu, hoc thieu, doi chieu
tac toan » tap toan, tam toan, hach 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: ho chieu tinh - hanh tranh cua ((nhung cong) or (thong thong)) tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh tranh cua ((nhung cong) OR (thong thong)) tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh tranh cua ((nhung cong) or (thong thong)) tac toan cau*.