Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chinh luan » chinh ngan, trinh luan, binh luan
tieu sach » chieu sach, dien sach, viet sach
chinh ca » chinh ta, chinh va, chinh tai
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan ban
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu sach) OR (te sach)) - hanh ((chinh luan) or (chinh ca)) thong cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sach) OR (te sach)) - hanh ((chinh luan) OR (chinh ca)) thong cong san toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sach) OR (te sach)) - hanh ((chinh luan) or (chinh ca)) thong cong san toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) OR (te sach)) - hanh ((chinh luan) or (chinh ca)) thong cong san toan tap*.