Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
hanh tranh » canh tranh, hanh trinh, hanh trang
doc hieu » toc thieu, hoc thieu, hoc hien
tranh va » tranh van, trang va, trinh va
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
so lieu » so dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so lieu) or (doc hieu)) tinh - hanh tranh va nhung huong dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so lieu) OR (doc hieu)) tinh - hanh tranh va nhung huong dan ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((so lieu) or (doc hieu)) tinh - hanh tranh va nhung huong dan ((toan cau) or (toan ban))*.