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
nhan dan » phan dau, gian dan, nhan tai
rai danh » trai doanh, lai doanh, loai danh
dai danh » dai dang, dao danh, day danh
khoa hoc » hoa hoc
cach hoc » cach thuc, cach thoi, dich hoc
cong hoc » dong hoc, cong hoa, cong coc
cac cong » cua cong
hoc lua » hoc luan, hoc luat, hoc cua
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 lua ((rai danh) OR (dai danh)) nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo cach hoc tap, nghien cac cong hoc nganh khoa hoc lua ((rai danh) OR (dai danh)) nhan dan".
• Adding a wildcard symbol may retrieve word variants: bo cach hoc tap, nghien cac cong hoc nganh khoa hoc lua ((rai danh) OR (dai danh)) nhan dan*.