Perhaps you should try some spelling variations:
pho chong » pho thong, pho cong, phong chong
chong hoc » chung hoc, chong doc, thong hoc
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » cua cong, thu cong, cac cong
nhan tai » hang tai, van tai, toan tai
tu mach » tu cach, tu manh, tu hach
va nhan » van nhan, ca nhan, va phan
hoc xa » hoc ma
tinh » trinh, dinh, minh

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 tinh) or (cuu cong)) hoc pho chong hoc xa hoi va nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien ((cuu tinh) OR (cuu cong)) hoc pho chong hoc xa hoi va nhan tai.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien ((cuu tinh) or (cuu cong)) hoc pho chong hoc xa hoi va nhan tai*.