Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, nhung don
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung cap, dung cua
hang cong » dang cong, hang nong, bang cong
gian nan » gian dan, gian lan, gian van

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 - hanh ((trung cua) OR (trung tuan)) ((nhung cong) or (hang cong)) dan gian nan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh ((trung cua) OR (trung tuan)) ((nhung cong) OR (hang cong)) dan gian nan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh ((trung cua) OR (trung tuan)) ((nhung cong) or (hang cong)) dan gian nan".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((trung cua) OR (trung tuan)) ((nhung cong) or (hang cong)) dan gian nan*.