Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nghien cua » nghien cuu, nghiep cua, nghiep vua
coc nganh » hoc nganh, cac nganh, chuc nganh
nganh hoa » thanh hoa, khanh hoa, danh hoa
ban thanh » ban hanh, ban hang
thanh tai » thanh hai, thanh toan, doanh tai
thu sach » tu sach, thuat sach, thu hoach
cong coc » cong cuoc, cong cac, cong co
hoi ban » hoi dan, hoi bai, doi ban
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (thuoc sach)) hoi dap, nghien cua cong coc nganh hoa hoc xa hoi ban thanh tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuoc sach)) hoi dap, nghien cua cong coc nganh hoa hoc xa hoi ban thanh tai".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (thuoc sach)) hoi dap, nghien cua cong coc nganh hoa hoc xa hoi ban thanh tai*.