Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
thong cong » trong cong, tong cong, thong thong
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
cong van » cong vang, cong san, song van
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)) - thanh trung cua thong cong van ((phan cau) OR (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chinh sach) OR (chiet tach)) - thanh trung cua thong cong van ((phan cau) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chinh sach) or (chiet tach)) - thanh trung cua thong cong van ((phan cau) OR (phan tu))".
• Adding a wildcard symbol may retrieve word variants: doi ((chinh sach) or (chiet tach)) - thanh trung cua thong cong van ((phan cau) OR (phan tu))*.