Perhaps you should try some spelling variations:
hoc doanh » hoa doanh, hoc danh, hoc dan
doanh hoa » doanh khoa, doanh hoan, danh hoa
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
su sach » so sach, vu sach
doi tap » doi tac, doi tai, doi tan
doi dap » hoi dap, doi dau, do dap
hoi van » hoi va, hoi dan, hai van
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 ((doi tap) or (doi dap)), nghien cuu cong hoc doanh hoa hoc xa hoi van thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((doi tap) OR (doi dap)), nghien cuu cong hoc doanh hoa hoc xa hoi van thanh van.
• Adding a wildcard symbol may retrieve word variants: su sach ((doi tap) or (doi dap)), nghien cuu cong hoc doanh hoa hoc xa hoi van thanh van*.