Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
nhan khoa » nha khoa, khuan khoa, toan khoa
nhan taon » nhan trong, nhan thong, nhan tuong
thu canh » thuc hanh, thu cong, thu ban
canh hoc » anh hoc, cach hoc, danh hoc
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
hoc nhan » hoc nhanh, nhoc nhan, hoc phan
khoa hoc » hoa hoc
nhan tao » nhan tai, nhan dan
via van » va van, gian van, giay van
hoc la » hoc lam, hoc lap, hoc lao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu canh hoc tap, nghien cac cong hoc nhan khoa hoc la via van ((nhan taon) or (nhan tao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu canh hoc tap, nghien cac cong hoc nhan khoa hoc la via van ((nhan taon) OR (nhan tao)).
• Adding a wildcard symbol may retrieve word variants: thu canh hoc tap, nghien cac cong hoc nhan khoa hoc la via van ((nhan taon) or (nhan tao))*.