Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
trung ap » trung cap, trung lap, trung tam
dan than » dan chan, dan toan, dang thanh
van than » van thanh, van thang, van tuan
ban than » ban thanh, van thanh, ban hang
ap dung » xay dung, van dung

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