Perhaps you should try some spelling variations:
cach thoi » cac thoi, cach thuc, cach noi
thoi tap » toi tap, hoc tap, thoi dai
dong hoc » dong co, dong luc
khoa hoc » hoa hoc
can luan » dan luan, san luan, han luan
tu cach » tu cac
mon hoc » toan hoc
voi can » voi cac, voi cong, voi hang
hoc xa » hoc ma
xa voi » xa hoi, ba voi, da voi

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 thoi tap, nghien cuu ((mon hoc) or (dong hoc)) toan khoa hoc xa voi can luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach thoi tap, nghien cuu ((mon hoc) OR (dong hoc)) toan khoa hoc xa voi can luan van.
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tap, nghien cuu ((mon hoc) or (dong hoc)) toan khoa hoc xa voi can luan van*.