Perhaps you should try some spelling variations:
doanh khoa » toan khoa
soc doanh » so doanh, hoa doanh, voi doanh
van thanh » ban thanh, van tuan
thu mach » thu sach, thuat mach, thu hoach
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » cua cong, thu cong, cac cong
cong soc » cong so, cong suc, cong coc
khoa hoc » hoa hoc
xa thai » a thai, da thai, xa hai
ca thai » chat thai, hoa 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 mach hoc tap, nghien cuu cong soc doanh khoa hoc ((xa thai) OR (ca thai)) van thanh san~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu mach hoc tap, nghien cuu cong soc doanh khoa hoc ((xa thai) OR (ca thai)) van thanh san".
• Adding a wildcard symbol may retrieve word variants: thu mach hoc tap, nghien cuu cong soc doanh khoa hoc ((xa thai) OR (ca thai)) van thanh san*.