Perhaps you should try some spelling variations:
thanh trung » thanh tung
phuong danh » phuong anh, phuong hanh, phuong thanh
phuong dinh » phuong binh, phuong linh, phuong trinh
chieu sang » chieu sach, chieu xanh, hieu lang
cua thuong » cua truong, cua phuong, ca thuong
trung cua » truong cua, trung tuan, trung cap
hieu van » hieu va, thien van, lieu va
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 van)) - thanh trung cua thuong ((phuong danh) OR (phuong dinh)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (hieu van)) - thanh trung cua thuong ((phuong danh) OR (phuong dinh)) toan cao~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu van)) - thanh trung cua thuong ((phuong danh) OR (phuong dinh)) toan cao*.