Perhaps you should try some spelling variations:
nhanh khoa » nhan khoa, nganh khoa, hang khoa
nghien cac » nghiep cach, nghien cuu, nghiep cay
hoc nhanh » hoc nganh, hoc phan
khoa hoc » hoa hoc
nhan tai » hang tai, van tai, toan tai
cong hoc » dong hoc, cong hoa, cong coc
cac cong » cua cong
cau toi » cau hoi, cau thi, cac toi
toi tap » toi gap, toan tap, tong tap
nhan va » nhan dan, nhan tao, phan van
hoc xa » hoc ma
xa hoa » xa khoa, xa hoi, ma hoa
tu cau » tu cac, cu cau, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cau toi tap, nghien cac cong hoc nhanh khoa hoc xa hoa dan ((nhan va) or (nhan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cau toi tap, nghien cac cong hoc nhanh khoa hoc xa hoa dan ((nhan va) OR (nhan tai)).
• Adding a wildcard symbol may retrieve word variants: tu cau toi tap, nghien cac cong hoc nhanh khoa hoc xa hoa dan ((nhan va) or (nhan tai))*.