Perhaps you should try some spelling variations:
nhanh khong » nhanh chong, nganh khong, nhan khong
nghiem thuc » nghiem thuoc, nghiep thuc, nhiem thuc
nghien thu » nghiep thuc, nghien cuu, nghe thu
coc nhanh » hoc nhanh, doc nhanh, cach nhanh
khong hoc » khung hoc, thong hoc, khong thuoc
sach hoc » cach hoc, sach hoi, mach hoc
cong coc » cong cuoc, cong cac, cong co
nhan dan » phan dau, gian dan, nhan tai
so sach » so sanh, bo sach, co sach
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: so sach hoc tap, ((nghien thu) OR (nghiem thuc)) cong coc nhanh khong hoc xa hoi ca nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach hoc tap, ((nghien thu) OR (nghiem thuc)) cong coc nhanh khong hoc xa hoi ca nhan dan".
• Adding a wildcard symbol may retrieve word variants: so sach hoc tap, ((nghien thu) OR (nghiem thuc)) cong coc nhanh khong hoc xa hoi ca nhan dan*.