Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
hoc nganh » hoc nhanh
thu sach » thuat sach, thuoc sach, thu hoach
khoa hoc » hoa hoc
cong hoc » dong hoc, cong hoa, cong coc
dap nhan » dap nha, dac nhan, dam nhan
nhan dan » phan dau, gian dan, nhan tai
tu sach » su sach, te sach, tu cach
hoi tap » hoc tap, hoi tai, hai tap
hoc xa » hoc ma

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) hoi tap, nghien cuu khoa hoc nganh cong hoc xa hoi dap nhan dan~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) hoi tap, nghien cuu khoa hoc nganh cong hoc xa hoi dap nhan dan*.