Perhaps you should try some spelling variations:
nhanh khoa » nhan khoa, nganh khoa, hang khoa
hoc nhanh » hoc nganh, hoc phan
khoa hoc » hoa hoc
hoa lang » hoa dan, hoa van
lang dau » hang dau, xang dau, nang dau
tu sach » thu sach, su sach, te sach
hoi tap » hoi dap, hoc tap, hai tap
hoi tai » hoc tai, hoi trac
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoi hoa » hoi khoa, hoc hoa, hoi hoc
hoc xa » hoc ma

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((hoi tap) or (hoi tai)), nghien cuu mon hoc nhanh khoa hoc xa hoi hoa lang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((hoi tap) OR (hoi tai)), nghien cuu mon hoc nhanh khoa hoc xa hoi hoa lang dau.
• Adding a wildcard symbol may retrieve word variants: tu sach ((hoi tap) or (hoi tai)), nghien cuu mon hoc nhanh khoa hoc xa hoi hoa lang dau*.