Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
nhanh khoa » nhan khoa, nganh khoa, hang khoa
thuc thai » thuc pham, thuc thuc
hoc nhanh » hoc nganh, hoc phan
cong hoc » dong hoc, cong hoa, cong coc
cua nhan » ca nhan, cua ngan, cua nha
cac cong » cua cong
khoa hoc » hoa hoc
mai hoi » mai khoi, dai hoi, lai hoi
hoi cua » hoi chuc
tu cach » tu cac
hoc mai » hoc ma, hoc dai, hoc bai
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: tu cach ((thuc thai) or (toc thai)), nghien cac cong hoc nhanh khoa hoc mai 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 nhanh khoa hoc mai hoi cua nhan va.
• Adding a wildcard symbol may retrieve word variants: tu cach ((thuc thai) or (toc thai)), nghien cac cong hoc nhanh khoa hoc mai hoi cua nhan va*.