Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
phan cung » phan cong, phan ung, phan xuong
mach hoc » cach hoc, dich hoc, anh hoc
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
hoc phan » hoc dan, hoc pho
cung hoc » chung hoc, dung hoc, vung hoc
nhan tao » nhan tai, nhan dan
tu mach » tu cach, tu manh, tu hach
hoi van » hoi dan, hai van, hoi han

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu mach hoc tap, nghien cac cong hoc phan cung hoc ma ((hoi van) OR (hoi va)) nhan tao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cac cong hoc phan cung hoc ma ((hoi van) OR (hoi va)) nhan tao".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cac cong hoc phan cung hoc ma ((hoi van) OR (hoi va)) nhan tao*.