Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
nhan dan » phan dau, gian dan, nhan tai
tu sach » thu sach, su sach, te sach
hai van » thai van, ha van, hao van
hai tan » hai quan
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: tu sach hoc tap, nghien cuu dong hoc nganh hoa hoc xa ((hai van) or (hai tan)) nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien cuu dong hoc nganh hoa hoc xa ((hai van) OR (hai tan)) nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu dong hoc nganh hoa hoc xa ((hai van) or (hai tan)) nhan dan*.