Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
danh nhan » doanh nhan, thanh nhan, benh nhan
sach hoc » cach hoc, sach hoi, mach hoc
dan nhan » dan chan, van nhan, ban nhan
te sach » toc sach
cua van » cua ban, cua vat, cua dan
van hoc » van hoa
dan hoa » danh hoa, dan hoat, dan khoa
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: te sach hoc tap, nghien cua van hoc dan hoa hoc xa hoi ((dan nhan) OR (danh nhan)) tao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach hoc tap, nghien cua van hoc dan hoa hoc xa hoi ((dan nhan) OR (danh nhan)) tao".
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien cua van hoc dan hoa hoc xa hoi ((dan nhan) OR (danh nhan)) tao*.