Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
sach hoi » sach doi, cach thoi, hoach hoi
sach moi » sach doi, bach mai, sach bai
khoa hoc » hoa hoc
nhan dan » phan dau, gian dan, nhan tai
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
ma hoi » mai hoi, xa hoi, ma hoa
hoi ca » hoi cua, hoi cac, hoi cau

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