Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
nganh khoa » nganh hoa, nganh khong, doanh khoa
thuc thai » thuc pham, thuc thuc
hoc nganh » hoc nhanh
thu cach » thuc cach, thu canh, tu cach
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi cau

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

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