Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
phan chung » phan cung, phan thuong, phan cong
phan hung » phan ung, phan hong, phan cung
nhan tao » nhan tai, nhan dan
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
mach hoc » cach hoc, dich hoc, anh hoc
van nhan » van phan, van thanh, danh nhan
hoi van » hoi va, hoi dan, hai van
tu mach » tu cach, tu manh, tu hach
mai hoi » mai khoi, dai hoi, lai hoi
hoc mai » hoc ma, hoc dai, hoc bai

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 chung) OR (phan hung)) hoc mai hoi van nhan tao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cac cong hoc ((phan chung) OR (phan hung)) hoc mai hoi van nhan tao*".