Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
manh tuong » manh tung, manh cuong, minh tuong
mach hoc » cach hoc, dich hoc, anh hoc
cong hoc » dong hoc, cong hoa, cong coc
hoc manh » hoc anh, hoc hanh, hoc danh
tuong ho » tong hop
nhan dan » gian dan, nhan tai
phan dau » phan tu, hang dau
tu mach » tu cach, tu manh, tu hach
voi cac » loi cach
ma voi » ba voi, da voi, ma moi
ho ma » hoc ma, co ma, ho ba

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 thu cong hoc manh tuong ho ma voi cac ((nhan dan) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien thu cong hoc manh tuong ho ma voi cac ((nhan dan) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien thu cong hoc manh tuong ho ma voi cac ((nhan dan) or (phan dau))*.