Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
doanh khoa » toan khoa
hoc doanh » hoa doanh, hoc danh, hoc dan
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
nhan tai » hang tai, van tai, toan tai
anh noi » hanh noi, nang noi
noi tap » toi tap, ngoai tap, noi tiep
nhan va » nhan dan, nhan tao, phan van
tu anh » tu hanh, tu manh, thu anh
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 anh noi tap, nghien cac cong hoc doanh khoa hoc xa hoi dap ((nhan va) or (nhan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu anh noi tap, nghien cac cong hoc doanh khoa hoc xa hoi dap ((nhan va) OR (nhan tai)).
• Adding a wildcard symbol may retrieve word variants: tu anh noi tap, nghien cac cong hoc doanh khoa hoc xa hoi dap ((nhan va) or (nhan tai))*.