Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
bach thoi » cach thoi, cac thoi, bach khoa
hoc doanh » hoa doanh, hoc danh, hoc nganh
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
thoi tap » toi tap, hoc tap, thoi dai
khoa hoc » hoa hoc
hoi van » hoi va, hoi dan, hai van
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach thoi tap, nghien cua cong ((hoc doanh) or (hoc dan)) khoa hoc ma hoi van thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach thoi tap, nghien cua cong ((hoc doanh) OR (hoc dan)) khoa hoc ma hoi van thanh van.
• Adding a wildcard symbol may retrieve word variants: vu bach thoi tap, nghien cua cong ((hoc doanh) or (hoc dan)) khoa hoc ma hoi van thanh van*.