Perhaps you should try some spelling variations:
doanh tuong » doanh thuong, doanh tong, doanh trong
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
sach phoi » sach hoi, cach thoi, sach doi
hoa doanh » toan doanh, hoa dan
tuong hoc » truong hoc, tuong ho, duong hoc
phoi tai » phi tai, pham tai, hoc tai
cong hoa » dong hoa, dong hoc, hang hoa
toan tai » doanh tai, toan ban, toan cao
toan tap » toan ban
su sach » so sach, vu sach
hoi tai » hoc tai, hoi trac
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 phoi tai, nghien thu cong hoa doanh tuong hoc xa hoi tai ((toan tai) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach phoi tai, nghien thu cong hoa doanh tuong hoc xa hoi tai ((toan tai) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: su sach phoi tai, nghien thu cong hoa doanh tuong hoc xa hoi tai ((toan tai) OR (toan tap))*.