Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung dung
chieu sang » chieu sach, chieu xanh, hieu lang
nhieu tang » hieu lang, nhiet nang
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
doan van » doan va, hoang van, luan van

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 sang) or (nhieu tang)) - hanh tranh cua ((nhung huong) OR (nhung cong)) doan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (nhieu tang)) - hanh tranh cua ((nhung huong) OR (nhung cong)) doan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (nhieu tang)) - hanh tranh cua ((nhung huong) OR (nhung cong)) doan van ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (nhieu tang)) - hanh tranh cua ((nhung huong) OR (nhung cong)) doan van ban*.