Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoc khanh » hoc thanh, hoc hanh, hoa khanh
hoc nhanh » hoc nganh, hoc phan
tam dich » tap dich, tham dinh, nam dinh
dich hoc » sinh hoc, hinh hoc, tinh hoc
toan tai » toan tap, doanh tai, toan ban
ca toan » cua toan, va toan, bai toan
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: tam dich hoc tap, nghien cua cong ((hoc khanh) or (hoc nhanh)) hoa hoc xa hoi ca toan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tam dich hoc tap, nghien cua cong ((hoc khanh) OR (hoc nhanh)) hoa hoc xa hoi ca toan tai.
• Adding a wildcard symbol may retrieve word variants: tam dich hoc tap, nghien cua cong ((hoc khanh) or (hoc nhanh)) hoa hoc xa hoi ca toan tai*.