Perhaps you should try some spelling variations:
thanh trung » thanh tung
phuong danh » phuong anh, phuong dinh, phuong hanh
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
trung luan » truong luan, trung tuan, trung quan
phuong dan » phuong doan, huong dan, phuong lan
luan thuc » dan thuc, nhan thuc, toan thuc
than cau » toan cau, phan cau, 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 (chieu sach)) - thanh trung luan thuc ((phuong dan) or (phuong danh)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - thanh trung luan thuc ((phuong dan) OR (phuong danh)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu sach)) - thanh trung luan thuc ((phuong dan) or (phuong danh)) than cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu sach)) - thanh trung luan thuc ((phuong dan) or (phuong danh)) than cau*.