Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
trung dap » trung cap, trung dai, trung dam
khoan cam » khoa cam, khoan va, phan cam
ung cong » dung cong, luong cong, duong cong
cong san » cong tac
than cua » nhan cua, thai cua, ban cua

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 sach) or (chieu sang)) - thanh trung dap ung cong san ((than cua) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - thanh trung dap ung cong san ((than cua) OR (khoan cam)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu sang)) - thanh trung dap ung cong san ((than cua) or (khoan cam))*.