Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
chu sang » chu bang, thu sang, chuc nang
trung ha » trung hoc, trung tam, trung cap
ha thong » hoa thong, nha thong, he thong
tan than » tan thanh, ban than, tam than

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu sang) or (chieu sang)) - thanh trung ha thong cong ((tan than) or (tan tran)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu sang) OR (chieu sang)) - thanh trung ha thong cong ((tan than) OR (tan tran)) cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chu sang) or (chieu sang)) - thanh trung ha thong cong ((tan than) or (tan tran)) cao*.