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
vang thanh » van thanh, dang thanh, tang thanh
thanh chau » thanh cha, thanh cham, thanh chu
tong cong » trong cong, cong cong, dung cong
trung co » trung bo, trong co, truong cao

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 co ((tong cong) or (cong dong)) vang thanh chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - thanh trung co ((tong cong) OR (cong dong)) vang thanh chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu sach)) - thanh trung co ((tong cong) or (cong dong)) vang thanh chau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu sach)) - thanh trung co ((tong cong) or (cong dong)) vang thanh chau*.