Perhaps you should try some spelling variations:
hoc doanh » hoa doanh, hoc danh, hoc dan
doanh hoa » doanh khoa, doanh hoan, danh hoa
sach moi » sach doi, sach hoi, bach mai
nhan tai » van tai, toan tai
hang tai » hang va, dung tai
su sach » so sach, vu sach
moi tap » moi tai, toi tap
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi cau

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach moi tap, nghien cuu mot hoc doanh hoa hoc xa hoi ca ((nhan tai) OR (hang tai))~".
• Adding a wildcard symbol may retrieve word variants: su sach moi tap, nghien cuu mot hoc doanh hoa hoc xa hoi ca ((nhan tai) OR (hang tai))*.