Perhaps you should try some spelling variations:
nhung phuong » nhu phuong, truong phuong, bang phuong
dung phuong » dung thuong, bang phuong, dung chung
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
do van » dao van, vo van, so van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu tinh - hanh tranh cua ((nhung phuong) or (dung phuong)) do van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - hanh tranh cua ((nhung phuong) OR (dung phuong)) do van ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - hanh tranh cua ((nhung phuong) or (dung phuong)) do van ban*.