Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
chieu sang » chieu sach, chieu xanh, nhieu tang
phuong lan » phuong la, thuong lan, phuong linh
hieu lang » hieu quang, nhieu tang, hieu van
chinh cua » chinh ca, chinh sua, hinh cua
cua dung » cua dang, cua dong, qua dung
than cap » khan cap, thanh lap, thanh cac
toan cau » toan cao, toan ban, toan tap

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

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