Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chiet tach, chieu sang, chieu xanh
dong cong » duong cong, dung cong, dang cong
cong khan » cong khanh, cong nhan, cong phan
cua tong » cua cong, cua dong, cua song
cua nong » cua cong, cuu nong, cua dong
khan ap » khan cap, han ap, khan dam

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 (chinh sach)) - thanh trung ((cua tong) or (cua nong)) dong cong khan ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - thanh trung ((cua tong) OR (cua nong)) dong cong khan ap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chinh sach)) - thanh trung ((cua tong) or (cua nong)) dong cong khan ap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chinh sach)) - thanh trung ((cua tong) or (cua nong)) dong cong khan ap*.