Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
chieu sang » chieu sach, chieu xanh, hieu lang
nhieu tang » hieu lang, nhiet nang
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
huong doan » phuong doan, huong dan, huong loan
cua nhung » va nhung
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) OR (hanh trinh)) cua nhung huong doan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (nhieu tang)) - ((hanh tranh) OR (hanh trinh)) cua nhung huong doan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (nhieu tang)) - ((hanh tranh) OR (hanh trinh)) cua nhung huong doan van ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (nhieu tang)) - ((hanh tranh) OR (hanh trinh)) cua nhung huong doan van ban*.