Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
cuu phuong » cac phuong, thu phuong
nhan dinh » nhan sinh, phan dinh, nhan tinh
dinh cuu » dinh chi
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tap

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

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