Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, anh khoa
doanh khoa » toan khoa
thuat dan » thuat san, thuat ban, thuat dam
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
cua nhan » ca nhan, cua ngan, cua nha
nhan dan » phan dau, gian dan, nhan tai
dan hoi » dan hoc, dai hoi, van hoi
hoi tai » hoc tai, hoi trac
hoi cua » hoi chuc
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: thuat dan hoi tai, nghien cuu dong hoc ((nganh khoa) or (doanh khoa)) hoc ma hoi cua nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat dan hoi tai, nghien cuu dong hoc ((nganh khoa) OR (doanh khoa)) hoc ma hoi cua nhan dan.
• Adding a wildcard symbol may retrieve word variants: thuat dan hoi tai, nghien cuu dong hoc ((nganh khoa) or (doanh khoa)) hoc ma hoi cua nhan dan*.