Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
sach hoi » sach doi, sach moi, cach thoi
cong hoc » dong hoc, cong coc, cong ho
cong hoa » dong hoa, dong hoc, hang hoa
cau nhan » chau nhan, ca nhan, cu nhan
tu sach » thu sach, su sach, te 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
hoi cau » hoi chu, hoc cau, hoa cau
nhan va » nhan tai, nhan dan, nhan tao

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 hoi tap, nghien cuu mot hoc nhanh ((cong hoc) or (cong hoa)) xa hoi cau nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoi tap, nghien cuu mot hoc nhanh ((cong hoc) OR (cong hoa)) xa hoi cau nhan va.
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, nghien cuu mot hoc nhanh ((cong hoc) or (cong hoa)) xa hoi cau nhan va*.