Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
he hieu » he nhieu, he dieu, de hieu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: he hieu lang - hanh tranh cua ((nhung phuong) or (hang cong)) dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: he hieu lang - hanh tranh cua ((nhung phuong) OR (hang cong)) dan ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: he hieu lang - hanh tranh cua ((nhung phuong) or (hang cong)) dan ((toan cau) or (toan ban))*.