Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
danh nhan » doanh nhan, thanh nhan, benh nhan
sach hoc » cach hoc, sach hoi, mach hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
hoc tan » hoc tang, hoc dan, hoc tai
tan hoa » van hoa, tap hoa, tan ha
va nhan » van nhan, ca nhan, va phan
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: thuoc sach hoc tap, nghien cuu cong hoc tan hoa hoc xa hoi ((va nhan) or (danh nhan)) dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach hoc tap, nghien cuu cong hoc tan hoa hoc xa hoi ((va nhan) OR (danh nhan)) dan.
• Adding a wildcard symbol may retrieve word variants: thuoc sach hoc tap, nghien cuu cong hoc tan hoa hoc xa hoi ((va nhan) or (danh nhan)) dan*.