Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hoc nhanh » hoc nganh, hoc phan
thu sach » tu sach, thuat sach, thuoc sach
sach doi » sach hoi, sach moi, sach dao
cong hoc » cong hoa, cong coc, cong ho
dung hoc » dung thuoc, trung hoc, dung khoa
dong hoc » dong co, dong luc
cao phan » co phan, cho phan, cac phan
phan van » pham van, thanh van, luan van
doi tap » doi tac, doi dap, doi tai
hoi cao » hoc cao, hoi co, hoi cho
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: thu sach doi tap, nghien thu cong hoc nhanh ((dung hoc) or (dong hoc)) ma hoi cao phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach doi tap, nghien thu cong hoc nhanh ((dung hoc) OR (dong hoc)) ma hoi cao phan van.
• Adding a wildcard symbol may retrieve word variants: thu sach doi tap, nghien thu cong hoc nhanh ((dung hoc) or (dong hoc)) ma hoi cao phan van*.