Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
dong cong » duong cong, dang cong, cong cong
dung cong » dung trong
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: theo chieu sach - thanh trung cua thong ((dong cong) OR (dung cong)) khan ap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - thanh trung cua thong ((dong cong) OR (dung cong)) khan ap".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung cua thong ((dong cong) OR (dung cong)) khan ap*.