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
danh nhan » doanh nhan, thanh nhan, benh nhan
nhan dan » phan dau, gian dan, nhan tai
hai danh » thai danh, hai anh, hai dang
khoa hoc » hoa hoc
dong hoc » dong co, dong luc
cac dong » cac duong, cac cong, cac dang
dich hoc » sinh hoc, hinh hoc, tinh hoc
anh hoc » sinh hoc, benh hoc, hinh hoc
hoc lua » hoc luan, hoc luat, hoc cua
lua hai » qua hai, cua hai, lua lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo ((anh hoc) or (dich hoc)) tap, nghien cac dong hoc nganh khoa hoc lua hai danh nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo ((anh hoc) OR (dich hoc)) tap, nghien cac dong hoc nganh khoa hoc lua hai danh nhan dan.
• Adding a wildcard symbol may retrieve word variants: bo ((anh hoc) or (dich hoc)) tap, nghien cac dong hoc nganh khoa hoc lua hai danh nhan dan*.