Perhaps you should try some spelling variations:
nhung hoang » khung hoang, phuong hoang, nhung cong
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoang van » hang va
phan dau » hang dau

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 (chieu sach)) - canh tranh cua nhung hoang van ((phan tu) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - canh tranh cua nhung hoang van ((phan tu) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - canh tranh cua nhung hoang van ((phan tu) or (phan dau))*.