Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nganh khoa » nganh hoa, nganh khong, anh khoa
doanh khoa » toan khoa
cong cac » cuong cac, cong tac, cong cau
dan chan » dan gian, dan ca, van chat
hop tap » hoc tap, hop tac, hop tai
hoi dan » hoa dan, hoc dan, hoi dap
chan va » chuan va, nhan va, chat va
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: tu cac hop tap, nghien thu cong cac ((nganh khoa) or (doanh khoa)) hoc xa hoi dan chan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac hop tap, nghien thu cong cac ((nganh khoa) OR (doanh khoa)) hoc xa hoi dan chan va.
• Adding a wildcard symbol may retrieve word variants: tu cac hop tap, nghien thu cong cac ((nganh khoa) or (doanh khoa)) hoc xa hoi dan chan va*.