Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
thuoc nganh » thuong nganh, hoc nganh, chuc nganh
dong thuoc » dung thuoc, dang thuoc, don thuoc
khong hoc » khung hoc, thong hoc, khong thuoc
cuu dong » cuu cong, cuu tong, cuu long
dap nhan » dap nha, dam nhan, danh nhan
dac nhan » cac nhan, danh nhan, ca nhan
anh hoc » sinh hoc, benh hoc, hinh hoc
ke anh » le anh, ky anh, de anh
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: ke anh hoc tap, nghien cuu dong thuoc nganh khong hoc xa hoi ((dap nhan) OR (dac nhan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ke anh hoc tap, nghien cuu dong thuoc nganh khong hoc xa hoi ((dap nhan) OR (dac nhan)) van".
• Adding a wildcard symbol may retrieve word variants: ke anh hoc tap, nghien cuu dong thuoc nganh khong hoc xa hoi ((dap nhan) OR (dac nhan)) van*.