Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
sach hoi » sach doi, sach moi, cach thoi
nhan dan » phan dau, gian dan, nhan tai
su sach » so sach, vu sach
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hai van » thai van, hai tan, hao van
hoc xa » hoc ma
ha van » hoa van, nha van, va van

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 hoi dap, nghien cuu mot hoc nganh hoa hoc xa ((hai van) OR (ha van)) nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach hoi dap, nghien cuu mot hoc nganh hoa hoc xa ((hai van) OR (ha van)) nhan dan".
• Adding a wildcard symbol may retrieve word variants: su sach hoi dap, nghien cuu mot hoc nganh hoa hoc xa ((hai van) OR (ha van)) nhan dan*.