Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
thuc thai » thuc pham, thuc thuc
nhan khoa » nha khoa, khuan khoa, toan khoa
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
hoc nhan » hoc nhanh, nhoc nhan, hoc phan
khoa hoc » hoa hoc
cua nhan » ca nhan, cua ngan, cua nha
tu cach » tu cac
hoi cua » hoi chuc
nhan va » nhan tai, nhan dan, nhan tao
ma hoi » mai hoi, xa hoi, ma hoa

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 ((thuc thai) or (toc thai)), nghien cac cong hoc nhan khoa hoc ma hoi cua nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach ((thuc thai) OR (toc thai)), nghien cac cong hoc nhan khoa hoc ma hoi cua nhan va.
• Adding a wildcard symbol may retrieve word variants: tu cach ((thuc thai) or (toc thai)), nghien cac cong hoc nhan khoa hoc ma hoi cua nhan va*.