Perhaps you should try some spelling variations:
nanh nhung » canh nhung, hanh nhung, doanh nhung
anh nhung » canh nhung, hanh nhung, anh hung
hach hoc » cach hoc, mach hoc, hoach hoi
nhan tai » hang tai, van tai, toan tai
tu hach » tu hanh, tu cach, tu sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
cuoc xa » duoc xa, uoc xa, cuoc tao
va nhan » van nhan, ca nhan, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu hach hoc tap, nghien cuu mon hoc ((nanh nhung) or (anh nhung)) cuoc xa hoi va nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu hach hoc tap, nghien cuu mon hoc ((nanh nhung) OR (anh nhung)) cuoc xa hoi va nhan tai.
• Adding a wildcard symbol may retrieve word variants: tu hach hoc tap, nghien cuu mon hoc ((nanh nhung) or (anh nhung)) cuoc xa hoi va nhan tai*.