Perhaps you should try some spelling variations:
thanh gian » thanh giang, thach giang, thanh san
hoi thanh » hoc thanh, hai thanh, hoa thanh
cach hoc » cach thuc, cach thoi, dich hoc
hoc phan » hoc dan
tuong co » truong co, tuong ho, duong co
gian dan » gian lang
tu cach » tu cac
cuu mon » cuu mo, cuu mot, cuu cong
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach hoc tap, nghien cuu mon ((hoc phan) or (hoc pho)) tuong co ma hoi thanh gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach hoc tap, nghien cuu mon ((hoc phan) OR (hoc pho)) tuong co ma hoi thanh gian dan.
• Adding a wildcard symbol may retrieve word variants: tu cach hoc tap, nghien cuu mon ((hoc phan) or (hoc pho)) tuong co ma hoi thanh gian dan*.