Perhaps you should try some spelling variations:
thieu sach » thien hach, hieu cach, theo sach
chieu sach » chinh sach, chiet tach, chieu sang
nong thong » dong thong, cong thong, tong thong
tin thanh » tinh thanh, tien thanh, tan thanh
thanh lap » thanh san, phan lap, thanh hai
cong cua » cong cu, dong cua, huong cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (chieu sach)) - thanh cong cua ((nong thong) OR (nong thon)) tin thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (chieu sach)) - thanh cong cua ((nong thong) OR (nong thon)) tin thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) or (chieu sach)) - thanh cong cua ((nong thong) OR (nong thon)) tin thanh lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (chieu sach)) - thanh cong cua ((nong thong) OR (nong thon)) tin thanh lap*.