Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
nhanh hoa » nhanh hoan, thanh hoa, khanh hoa
thanh hai » thanh phan, thanh hoa, thanh san
van thanh » ban thanh, van tuan
sach hoc » cach hoc, sach hoi, mach hoc
thanh va » thanh van, hanh va, thanh ha
so sach » so sanh, bo sach, co sach
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
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: so sach hoc tap, nghien cuu mot hoc nhanh hoa hoc ((thanh hai) or (xa hai)) van thanh va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach hoc tap, nghien cuu mot hoc nhanh hoa hoc ((thanh hai) OR (xa hai)) van thanh va.
• Adding a wildcard symbol may retrieve word variants: so sach hoc tap, nghien cuu mot hoc nhanh hoa hoc ((thanh hai) or (xa hai)) van thanh va*.