Perhaps you should try some spelling variations:
chiet tach » chieu sach
duong cong » dung cong, luong cong, duong trong
trung dai » truong dai, truong dao, trung tam
ho chiet » ho chieu, ho thiet, hoc thiet
trung di » trung du, trung do, trung vi
trung vu » trung va, truong va, trung ha
cong ban » cong bang, cong san, cong tan
ban khan » ban than, ban nhan, ban chan
khan cap » khan ap, than cap, khoan cam

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 - hanh ((((trung di) OR (trung dai))) or (trung vu)) duong cong ban khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh ((((trung di) OR (trung dai))) OR (trung vu)) duong cong ban khan cap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - hanh ((((trung di) OR (trung dai))) or (trung vu)) duong cong ban khan cap*".