Perhaps you should try some spelling variations:
hoc thanh » hoc nhanh, hoan thanh, hoc phan
sach hoi » sach doi, sach moi, cach thoi
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
cong hoc » dong hoc, cong hoa, cong coc
phan van » thanh van, luan van, tran van
tu sach » thu sach, su sach, te sach
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: tu sach hoi trac, nghien cuu tong hoc thanh cong hoc xa hoi va ((phan van) OR (pham van))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoi trac, nghien cuu tong hoc thanh cong hoc xa hoi va ((phan van) OR (pham van))".
• Adding a wildcard symbol may retrieve word variants: tu sach hoi trac, nghien cuu tong hoc thanh cong hoc xa hoi va ((phan van) OR (pham van))*.