Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chieu sang, chieu xanh
dong doanh » dung doanh, trong doanh, doanh doanh
trung vap » trung cap, trung va, trung van
vap nhung » va nhung, ve nhung, voi nhung
cong doan » cong dan, cong hoan, cong san
phan cau » phan dau, phan cac, phan tu

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 (chiet tach)) - thanh trung vap nhung ((cong doan) OR (dong doanh)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chiet tach)) - thanh trung vap nhung ((cong doan) OR (dong doanh)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chiet tach)) - thanh trung vap nhung ((cong doan) OR (dong doanh)) phan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chiet tach)) - thanh trung vap nhung ((cong doan) OR (dong doanh)) phan cau*.