Perhaps you should try some spelling variations:
phap toan » phap hoan, phap luan, phap phan
danh nhan » doanh nhan, thanh nhan, benh nhan
bach hoc » cach hoc, bach hoa, mach hoc
khoa hoc » hoa hoc
hoi danh » hop danh, hoi dan, hoc danh
nhan dan » phan dau, gian dan, nhan tai
bac hoc » bai hoc, bac ho
mo phap » mon phap, hoc phap
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: vu ((bach hoc) or (bac hoc)) tap, nghien cuu mo phap toan khoa hoc xa hoi danh nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((bach hoc) OR (bac hoc)) tap, nghien cuu mo phap toan khoa hoc xa hoi danh nhan dan.
• Adding a wildcard symbol may retrieve word variants: vu ((bach hoc) or (bac hoc)) tap, nghien cuu mo phap toan khoa hoc xa hoi danh nhan dan*.