Perhaps you should try some spelling variations:
nghiem thuc » nghiem thuoc, nghiep thuc, nhiem thuc
truong hoc » trung hoc, tuong ho, truong bo
tuong hoc » tuong ho, duong hoc, tuong khoa
thuc cong » thuoc cong, thu cong, chuc cong
hoa doanh » toan doanh, hoa dan
tai toan » bai toan, tap toan, tai tuan
toan tai » toan tap, doanh tai, toan ban
sach dai » sach dao, sach bai, sach dat
cong hoa » dong hoa, dong hoc, hang hoa
hoi tai » hoc tai, hoi trac
dai tai » dai hai, dai thao
su sach » so sach, vu sach

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 dai tai, nghiem thuc cong hoa doanh ((tuong hoc) or (truong hoc)) xa hoi tai toan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach dai tai, nghiem thuc cong hoa doanh ((tuong hoc) OR (truong hoc)) xa hoi tai toan tai.
• Adding a wildcard symbol may retrieve word variants: su sach dai tai, nghiem thuc cong hoa doanh ((tuong hoc) or (truong hoc)) xa hoi tai toan tai*.