Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
cam nhan » ca nhan, cam chan, cam nang
sach dao » lanh dao
cac cong » cua cong
sach doi » sach hoi, sach moi, sach bai
voi cam » voi cac, voi nam, voi can
dua voi » da voi, dua moi, sua voi
hoc dua » hoc cua, hoc duc, hoc lua
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 ((sach doi) or (sach dao)) tap, nghien cac cong hoc nganh khoa hoc dua voi cam nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach doi) OR (sach dao)) tap, nghien cac cong hoc nganh khoa hoc dua voi cam nhan va.
• Adding a wildcard symbol may retrieve word variants: tu ((sach doi) or (sach dao)) tap, nghien cac cong hoc nganh khoa hoc dua voi cam nhan va*.