Perhaps you should try some spelling variations:
nhanh khong » nhanh chong, nganh khong, nhan khong
hoc nhanh » hoc nganh, hoc phan
khong hoc » khung hoc, thong hoc, khong thuoc
gianh dan » gian dan, giang day, giang van
va gianh » va gian, van giang, va giai
te sach » toc sach
moi tap » moi tai, toi tap
mo tai » bo tai, go tai, so tai
mo hoc » mon hoc, co hoc
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: te sach ((moi tap) or (mo tai)), nghien cuu mo hoc nhanh khong hoc ma hoi va gianh dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((moi tap) OR (mo tai)), nghien cuu mo hoc nhanh khong hoc ma hoi va gianh dan.
• Adding a wildcard symbol may retrieve word variants: te sach ((moi tap) or (mo tai)), nghien cuu mo hoc nhanh khong hoc ma hoi va gianh dan*.