Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
nhung tuong » nhung huong, hung vuong, nhung cong
nhung dung » phuong dung, ung dung, thong dung
tranh cua » doanh cua, manh cua
manh toan » thanh toan, anh tuan, tinh toan
doc hieu » toc thieu, hoc thieu, hoc hien
hieu luc » hieu luat, hieu qua
toan cau » toan cao, toan ban, toan tap
canh » anh, can, hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu luc - canh tranh cua ((nhung dung) or (((nhung tuong) OR (nhung phuong)))) manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu luc - canh tranh cua ((nhung dung) OR (((nhung tuong) OR (nhung phuong)))) manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu luc - canh tranh cua ((nhung dung) or (((nhung tuong) OR (nhung phuong)))) manh toan cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu luc - canh tranh cua ((nhung dung) or (((nhung tuong) OR (nhung phuong)))) manh toan cau*.