Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
van thanh » ban thanh, van tuan
sach hoi » sach doi, sach moi, cach thoi
su sach » so sach, vu sach
hoi tap » hoi dap, hoc tap, hoi tai
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hoc mai » hoc ma, hoc dai, hoc may
hoc bai » hoc dai, hoc giai
hoi van » hoi va, hoi dan, hai van

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach hoi tap, nghien cuu mot hoc nganh khong ((hoc mai) OR (hoc bai)) hoi van thanh san~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach hoi tap, nghien cuu mot hoc nganh khong ((hoc mai) OR (hoc bai)) hoi van thanh san".
• Adding a wildcard symbol may retrieve word variants: su sach hoi tap, nghien cuu mot hoc nganh khong ((hoc mai) OR (hoc bai)) hoi van thanh san*.