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
sach hoi » sach doi, sach moi, cach thoi
cuu cong » cua cong, thu cong, cac cong
cong coc » cong cuoc, cong cac, cong co
dan nhan » danh nhan, van nhan, ban nhan
dan chan » dan gian, dan ca, van chat
hoi tap » hoi dap, hoc tap, hoi tai
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, nghien cuu cong coc nganh hoa hoc xa hoi ((dan nhan) OR (dan chan)) tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach hoi tap, nghien cuu cong coc nganh hoa hoc xa hoi ((dan nhan) OR (dan chan)) tai".
• Adding a wildcard symbol may retrieve word variants: thuoc sach hoi tap, nghien cuu cong coc nganh hoa hoc xa hoi ((dan nhan) OR (dan chan)) tai*.