Perhaps you should try some spelling variations:
danh nhan » doanh nhan, thanh nhan, benh nhan
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
hoc tang » hoc bang, hoc tan, hoc tieng
tang hoa » hang hoa, tang ha, tang ho
nhan tao » nhan tai, nhan dan
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
hoc xa » hoc ma
xa hop » xa hoi, va hop, xa hoa

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) or (su sach)) hoc tap, nghien cuu dong hoc tang hoa hoc xa hop danh nhan tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) hoc tap, nghien cuu dong hoc tang hoa hoc xa hop danh nhan tao.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) hoc tap, nghien cuu dong hoc tang hoa hoc xa hop danh nhan tao*.