Perhaps you should try some spelling variations:
nhanh thong » nhanh chong, nhanh thang, nhanh hong
nhan thong » nhan trong, nha thong, nhan khong
sach doi » sach hoi, sach moi, sach dao
nhan dan » phan dau, gian dan, nhan tai
vu sach » vu bach, su sach, vu khach
doi tap » doi tac, doi dap, doi tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
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: vu sach doi tap, nghien cuu mon hoc ((nhanh thong) OR (nhan thong)) hoc xa hoi ca nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach doi tap, nghien cuu mon hoc ((nhanh thong) OR (nhan thong)) hoc xa hoi ca nhan dan".
• Adding a wildcard symbol may retrieve word variants: vu sach doi tap, nghien cuu mon hoc ((nhanh thong) OR (nhan thong)) hoc xa hoi ca nhan dan*.