Perhaps you should try some spelling variations:
doanh khoa » toan khoa
thanh phan » thanh pho, thanh san, thanh toan
soc doanh » so doanh, hoa doanh, voi doanh
ban thanh » ban hanh, ban hang
thu sach » tu sach, thuat sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
cuu cong » cua cong, thu cong, cac cong
cong soc » cong so, cong suc, cong coc
khoa hoc » hoa hoc
xa thai » ca thai, a thai, xa hai
da thai » dao thai, do thai, ca thai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach hoc tap, nghien cuu cong soc doanh khoa hoc ((xa thai) or (da thai)) ban thanh phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach hoc tap, nghien cuu cong soc doanh khoa hoc ((xa thai) OR (da thai)) ban thanh phan.
• Adding a wildcard symbol may retrieve word variants: thu sach hoc tap, nghien cuu cong soc doanh khoa hoc ((xa thai) or (da thai)) ban thanh phan*.