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
sach hoc » cach hoc, sach hoi, sach duoc
mach hoc » cach hoc, dich hoc, anh hoc
van nhan » van phan, van thanh, danh nhan
nhan van » nhan dan, nhan va, phan van
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hai van » thai van, ha van, hai tan
ma hai » ta hai, va hai, xa hai

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) or (mach hoc)) tap, nghien cuu mon hoc nhanh khong hoc ma hai van nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach hoc) OR (mach hoc)) tap, nghien cuu mon hoc nhanh khong hoc ma hai van nhan van.
• Adding a wildcard symbol may retrieve word variants: so ((sach hoc) or (mach hoc)) tap, nghien cuu mon hoc nhanh khong hoc ma hai van nhan van*.