Perhaps you should try some spelling variations:
nhanh chong » thanh cong, khanh phong
hoc nhanh » hoc nganh, hoc phan
chong hoc » chung hoc, chong doc, thong hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
van nhan » van phan, van thanh, danh nhan
nhan tai » hang tai, van tai, toan tai
so sach » so sanh, co sach, hoc sach
bo sach » co sach, hoc sach
doi tai » hoi tai, dai tai, doi tac
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: ((so sach) or (bo sach)) doi tai, nghien cuu cong hoc nhanh chong hoc ma hoa van nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) doi tai, nghien cuu cong hoc nhanh chong hoc ma hoa van nhan tai*.