Perhaps you should try some spelling variations:
ncanh nhung » doanh nhung, anh nhung, hanh nhung
canh nhung » anh nhung, hanh nhung, doanh nhung
mach hoc » cach hoc, dich hoc, anh hoc
tu mach » tu cach, tu manh, tu hach
cuoc xa » duoc xa, uoc xa, cuoc tao
nhan va » nhan tai, nhan dan, nhan tao
mo hoc » mon hoc, co hoc
hoi ca » hoi cua, hoi cac, hoi cau

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 cuu mo hoc ((ncanh nhung) or (canh nhung)) cuoc xa hoi ca nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cuu mo hoc ((ncanh nhung) OR (canh nhung)) cuoc xa hoi ca nhan va.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu mo hoc ((ncanh nhung) or (canh nhung)) cuoc xa hoi ca nhan va*.