Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
cua phuong » cuu phuong, cuc phuong, luan phuong
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
hanh manh » hanh mang, lanh manh, hoang manh
cong tinh » cong trinh, cong vinh, long tinh
chi sang » chi lang, chi chang, khai sang
manh cua » doanh cua, ban cua
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chi sang) or (((chieu sang) OR (hieu lang)))) - hanh manh cua phuong cong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi sang) OR (((chieu sang) OR (hieu lang)))) - hanh manh cua phuong cong tinh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi sang) or (((chieu sang) OR (hieu lang)))) - hanh manh cua phuong cong tinh toan ban".
• Adding a wildcard symbol may retrieve word variants: doi ((chi sang) or (((chieu sang) OR (hieu lang)))) - hanh manh cua phuong cong tinh toan ban*.