Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
thong cong » trong cong, tong cong, thong thong
nhan dang » nhan dan, phan dang, tran dang
cac thong » cac phong, cac tuong, tac thong
tran chau » tranh chap, tran huu
dang cac » dung cac, bang cac, dong cac
cong tan » cong tac, cong san, cong thanh

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)) - nhan dang cac thong cong tan tran chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chieu sach)) - nhan dang cac thong cong tan tran chau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chieu sach)) - nhan dang cac thong cong tan tran chau*.