Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
phan tuong » phan thuong, phan truong, phan xuong
tuong hoc » truong hoc, tuong ho, duong hoc
sach doi » sach hoi, sach moi, sach dao
nhan van » nhan dan, nhan va, phan van
so sach » so sanh, bo sach, co sach
doi tac » dong tac
cong so » cong san, cong hoa
so phan » co phan, hoc phan, hoa phan
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: so sach doi tac, nghien thu cong so phan tuong hoc ((xa hoi) or (xa thai)) doanh nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach doi tac, nghien thu cong so phan tuong hoc ((xa hoi) OR (xa thai)) doanh nhan van.
• Adding a wildcard symbol may retrieve word variants: so sach doi tac, nghien thu cong so phan tuong hoc ((xa hoi) or (xa thai)) doanh nhan van*.