Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
sach moi » sach doi, sach hoi, bach mai
cac dong » cac duong, cac cong, cac dang
dong hoc » dong co, dong luc
nhan dan » phan dau, gian dan, nhan tai
hang tai » hang va, dung tai
su sach » so sach, vu sach
moi tap » moi tai, toi tap
hoi dan » hoa dan, hoc dan, hoi dap
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: su sach moi tap, nghien cac dong hoc nganh hoa hoc xa hoi dan ((nhan dan) or (hang tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach moi tap, nghien cac dong hoc nganh hoa hoc xa hoi dan ((nhan dan) OR (hang tai)).
• Adding a wildcard symbol may retrieve word variants: su sach moi tap, nghien cac dong hoc nganh hoa hoc xa hoi dan ((nhan dan) or (hang tai))*.