Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
hoa doanh » toan doanh, hoa dan
doanh hoc » danh hoc, doanh khoa, doanh hoan
ban thanh » ban hanh, ban hang
sach moi » sach doi, sach hoi, bach mai
su sach » so sach, vu sach
moi tai » hoi tai, mo tai, moi thoi
cuu mon » cuu mo, cuu mot, cuu cong
mon hoa » mon hoc, dong hoa, cong hoa
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 tai, nghien cuu mon hoa doanh doanh hoc xa hoi ((ca nhan) or (ban thanh)) tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach moi tai, nghien cuu mon hoa doanh doanh hoc xa hoi ((ca nhan) OR (ban thanh)) tai*.