Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
nhanh hoa » nhanh hoan, thanh hoa, khanh hoa
thu sach » tu sach, thuat sach, thuoc sach
gian dan » gian lang
sach mo » sach moi, sach lo, sach dao
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hoi van » hoi va, hai van, hoi han
hoi dan » hoa dan, hoc dan, hoi dap
mo tai » bo tai, go tai, so tai
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: thu sach mo tai, nghien cuu mot hoc nhanh hoa hoc xa ((hoi van) or (hoi dan)) gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach mo tai, nghien cuu mot hoc nhanh hoa hoc xa ((hoi van) OR (hoi dan)) gian dan.
• Adding a wildcard symbol may retrieve word variants: thu sach mo tai, nghien cuu mot hoc nhanh hoa hoc xa ((hoi van) or (hoi dan)) gian dan*.