Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh lap » thanh san, phan lap, thanh hai
ho chiet » ho chieu, ho thiet, hoc thiet
tung vap » trung van, tuong vao, dung va
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
tung va » trung va, tuong va, dung va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - thanh ((tung vap) or (tung va)) nhung ((cong dan) OR (cong san)) thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh ((tung vap) OR (tung va)) nhung ((cong dan) OR (cong san)) thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - thanh ((tung vap) or (tung va)) nhung ((cong dan) OR (cong san)) thanh lap".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh ((tung vap) or (tung va)) nhung ((cong dan) OR (cong san)) thanh lap*.