Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoc doanh » hoa doanh, hoc danh, hoc dan
van thanh » ban thanh
sach hoi » sach doi, sach moi, cach thoi
cong hoc » dong hoc, cong hoa, cong coc
nhan hoc » nha hoc, nhan hoa, than hoc
van tuan » van quan, van ban, anh tuan
su sach » so sach, vu sach
hoi tai » hoc tai, hoi trac
xa thai » ca thai, a thai, da thai
hoc xa » hoc ma

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 hoi tai, nghien cua cong hoc doanh nhan hoc xa thai ((van thanh) OR (van tuan)) toan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach hoi tai, nghien cua cong hoc doanh nhan hoc xa thai ((van thanh) OR (van tuan)) toan".
• Adding a wildcard symbol may retrieve word variants: su sach hoi tai, nghien cua cong hoc doanh nhan hoc xa thai ((van thanh) OR (van tuan)) toan*.