Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chiet tach » chieu sach
cong thanh » dong thanh, cong trinh, cong tan
cach dung » sach dung, cach mang, tac dung
cua thong » cua thuong, cua khong, cua tong
dung cua » dung luan, dung cho
phan cau » phan dau, phan cac, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chinh sach) or (chiet tach)) - cach dung cua thong cong thanh ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chinh sach) OR (chiet tach)) - cach dung cua thong cong thanh ((phan cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: doi ((chinh sach) or (chiet tach)) - cach dung cua thong cong thanh ((phan cau) or (phan tu))*.