Perhaps you should try some spelling variations:
truong quan » trong quan, thong quan, luong quan
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
cong dan » cong san, cong tan, huong dan
gian ban » gian bana, gian dan, gian bac
gian lan » gian lang, gian dan, giang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh ((trung cua) or (truong quan)) nhung cong dan ((gian ban) OR (gian lan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trung cua) OR (truong quan)) nhung cong dan ((gian ban) OR (gian lan)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ((trung cua) or (truong quan)) nhung cong dan ((gian ban) OR (gian lan))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trung cua) or (truong quan)) nhung cong dan ((gian ban) OR (gian lan))*.