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
van thanh » ban thanh, van tuan
thu mach » thu sach, thuat mach, thu hoach
mach hoc » cach hoc, dich hoc, anh hoc
cuu nang » chuc nang, cam nang, cuu van
nang soc » nang doc, nang hoc, nang som
khoa hoc » hoa hoc
va thanh » gia thanh, ban thanh, va tinh
ta thanh » tai thanh, ha thanh, tran thanh

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 nang soc doanh khoa hoc ((va thanh) or (ta thanh)) van thanh phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu mach hoc tap, nghien cuu nang soc doanh khoa hoc ((va thanh) OR (ta thanh)) van thanh phan.
• Adding a wildcard symbol may retrieve word variants: thu mach hoc tap, nghien cuu nang soc doanh khoa hoc ((va thanh) or (ta thanh)) van thanh phan*.