Perhaps you should try some spelling variations:
doanh khoa » toan khoa
thanh nhan » thanh phan, thanh san, thanh toan
thanh hoa » thanh pho
hoi thanh » hoc thanh, hai thanh, hoa thanh
cach hoc » cach thuc, cach thoi, dich hoc
cuu cong » cua cong, thu cong, cac cong
cong cac » cuong cac, cong tac, cong cau
tu cach » tu cac
nhan va » nhan tai, nhan dan, nhan tao
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 cach hoc tap, nghien cuu cong cac ((thanh hoa) or (doanh khoa)) hoc xa hoi thanh nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach hoc tap, nghien cuu cong cac ((thanh hoa) OR (doanh khoa)) hoc xa hoi thanh nhan va.
• Adding a wildcard symbol may retrieve word variants: tu cach hoc tap, nghien cuu cong cac ((thanh hoa) or (doanh khoa)) hoc xa hoi thanh nhan va*.