Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
phan tuong » phan thuong, phan truong, phan xuong
sach dong » sach dung, sach song, sach rong
tuong hoc » truong hoc, tuong ho, duong hoc
dong tac » cong tac, dong tai, dong bac
cong hoa » dong hoa, dong hoc, hang hoa
hoa phan » hoa dan, co phan
nhan van » nhan dan, nhan va, phan van
su sach » so sach, vu sach
xa thai » ca thai, a thai, da thai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach dong tac, nghien cua cong hoa phan tuong hoc ((xa hoi) or (xa thai)) doanh nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach dong tac, nghien cua cong hoa phan tuong hoc ((xa hoi) OR (xa thai)) doanh nhan van.
• Adding a wildcard symbol may retrieve word variants: su sach dong tac, nghien cua cong hoa phan tuong hoc ((xa hoi) or (xa thai)) doanh nhan van*.