Perhaps you should try some spelling variations:
hoc nhanh » hoc phan
sach hoc » cach hoc, sach hoi, mach hoc
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
nhan tai » hang tai, van tai, toan tai
tu sach » thu sach, su sach, te sach
cuu mon » cuu mo, cuu mot, cuu cong
hai van » thai van, ha van, hai tan
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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