Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoa nhanh » hoc nhanh, hoa thanh, hoa khanh
thong hoa » thong khoa, thong ha, thong hoi
thong hoc » thuong hoc, tuong hoc, thong hoi
danh nhan » doanh nhan, thanh nhan, benh nhan
sach hoi » sach doi, sach moi, cach thoi
cong hoa » dong hoa, dong hoc, hang hoa
hoi danh » hop danh, hoi dan, hoc danh
nhan van » nhan dan, nhan va, phan van
su sach » so sach, vu sach
hoi tap » hoi dap, hoc tap, hoi tai

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