Perhaps you should try some spelling variations:
trung thanh » truong thanh
chieu sach » chinh sach, chiet tach, chieu sang
trung hanh » trung khanh, trung anh, trong hanh
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong ban » cong bang, cong san, cong tan
than lap » thanh lap, phan lap, thao lap
toan lap » toan tap, toan lao, thanh lap

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