Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
hieu quang » thieu quang, hieu quan, hieu qua
chieu sang » chieu sach, chieu xanh, nhieu tang
cua phuong » cuu phuong, cuc phuong, luan phuong
hieu lang » nhieu tang, hieu van, biet lang
tranh cua » doanh cua, manh cua
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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 (((hieu lang) OR (hieu quang)))) - canh tranh cua phuong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (((hieu lang) OR (hieu quang)))) - canh tranh cua phuong cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (((hieu lang) OR (hieu quang)))) - canh tranh cua phuong cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (((hieu lang) OR (hieu quang)))) - canh tranh cua phuong cong dan than cao*.