Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
ban phuong » bang phuong, ban huong, van phuong
phuong cau » huong cau, phuong cham, phuong cach
tran dung » tran dang, tran hung, trung dung
cong ban » cong bang, cong san, cong tan

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

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