Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hoa doanh » toan doanh, hoa dan
khong hoc » khung hoc, khong thuoc, khong chuc
thong hoc » thuong hoc, tuong hoc, thong hoa
dinh hoc » sinh hoc, hinh hoc, tinh hoc
cong hoa » dong hoa, dong hoc, hang hoa
cau phan » chau phan, cuu phan, cac phan
phan van » pham van, thanh van, luan van
hoi cau » hoi chu, hoc cau, hoa cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: quy dinh hoc tap, nghien thu cong hoa doanh ((khong hoc) or (thong hoc)) xa hoi cau phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: quy dinh hoc tap, nghien thu cong hoa doanh ((khong hoc) OR (thong hoc)) xa hoi cau phan van.
• Adding a wildcard symbol may retrieve word variants: quy dinh hoc tap, nghien thu cong hoa doanh ((khong hoc) or (thong hoc)) xa hoi cau phan van*.