Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
coc nganh » hoc nganh, cac nganh, chuc nganh
nganh hoa » thanh hoa, khanh hoa, danh hoa
cuu cong » cua cong, thu cong, cac cong
cong coc » cong cuoc, cong cac, cong co
dan nhan » danh nhan, dan chan, van nhan
nhan tai » hang tai, van tai, toan tai
hoi tap » hoc tap, hoi tai, hai tap
hoi dan » hoa dan, hoc dan, thoi dai
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: thuoc sach ((hoi tap) OR (hoi dap)), nghien cuu cong coc nganh hoa hoc xa hoi dan nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((hoi tap) OR (hoi dap)), nghien cuu cong coc nganh hoa hoc xa hoi dan nhan tai".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((hoi tap) OR (hoi dap)), nghien cuu cong coc nganh hoa hoc xa hoi dan nhan tai*.