Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
nhung huong » nhung tuong, nhung cong, nhung dung
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
trung lap » trung cap, truong lam, truong lop
trung dam » trung tam, trung dai, trong dam
dan khan » dan khanh, dan chan, dan than
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: doi chieu sach - thanh ((trung lap) or (trung dam)) ((nhung huong) OR (nhung phuong)) dan khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((trung lap) OR (trung dam)) ((nhung huong) OR (nhung phuong)) dan khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((trung lap) or (trung dam)) ((nhung huong) OR (nhung phuong)) dan khan cap".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((trung lap) or (trung dam)) ((nhung huong) OR (nhung phuong)) dan khan cap*.