Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
canh sinh » canh tinh, canh binh, tinh sinh
sinh vap » sinh vat, sinh va, dinh van
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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 - canh sinh vap ((nhung cong) OR (thong cong)) doan ((phan cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh sinh vap ((nhung cong) OR (thong cong)) doan ((phan cau) OR (phan cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - canh sinh vap ((nhung cong) OR (thong cong)) doan ((phan cau) or (phan cac))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh sinh vap ((nhung cong) OR (thong cong)) doan ((phan cau) or (phan cac))*.