Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
thu dich » thu tich, chu dich, thu ich
dich hoc » sinh hoc, hinh hoc, tinh hoc
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
mai hoi » mai khoi, dai hoi, lai hoi
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu dich hoc tap, nghien cua cong hoc nganh khoa hoc ((xa hoi) or (mai hoi)) va nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu dich hoc tap, nghien cua cong hoc nganh khoa hoc ((xa hoi) OR (mai hoi)) va nhan va.
• Adding a wildcard symbol may retrieve word variants: thu dich hoc tap, nghien cua cong hoc nganh khoa hoc ((xa hoi) or (mai hoi)) va nhan va*.