Perhaps you should try some spelling variations:
hoc nhanh » hoc phan
van thanh » ban thanh, van tuan
thanh dan » thanh san, thanh van, thanh dat
khoa hoc » hoa hoc
tu sinh » thu sinh, tuc sinh, tu minh
cuu mon » cuu mo, cuu mot, cuu cong
hoa van » hoa dan, hoang van, hoa 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 sinh hoc tap, nghien cuu mon ((hoc nganh) or (hoc nhanh)) khoa hoc ma hoa van thanh dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sinh hoc tap, nghien cuu mon ((hoc nganh) OR (hoc nhanh)) khoa hoc ma hoa van thanh dan.
• Adding a wildcard symbol may retrieve word variants: tu sinh hoc tap, nghien cuu mon ((hoc nganh) or (hoc nhanh)) khoa hoc ma hoa van thanh dan*.