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
gian dan » gian lang
luan lai » lua lai, luan lap, xuan lai
phan dau » phan tu, hang dau
lai danh » lai doanh, loai danh, dai danh
khoa hoc » hoa hoc
hoc luan » hoc quan, nuoc luan, hoc luong
cach hoc » cach thuc, cach thoi, dich hoc
cong hoc » dong hoc, cong hoa, cong coc
cac cong » cua cong
bo cach » bo sach, bo canh, co cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo cach hoc tap, nghien cac cong hoc nganh khoa hoc luan lai danh ((phan dau) or (gian dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo cach hoc tap, nghien cac cong hoc nganh khoa hoc luan lai danh ((phan dau) OR (gian dan)).
• Adding a wildcard symbol may retrieve word variants: bo cach hoc tap, nghien cac cong hoc nganh khoa hoc luan lai danh ((phan dau) or (gian dan))*.