Perhaps you should try some spelling variations:
pho chong » pho thong, pho cong, phong chong
chong hoc » chung hoc, chong doc, thong hoc
ban thanh » ban hanh, ban hang
sanh hoc » sinh hoc, anh hoc, danh hoc
dong hoc » dong luc
so sanh » do sanh
hoi ban » hoi dan, hoi bai, doi ban
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: so sanh hoc tap, nghien cuu ((dong hoc) OR (dong co)) pho chong hoc xa hoi ban thanh san~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh hoc tap, nghien cuu ((dong hoc) OR (dong co)) pho chong hoc xa hoi ban thanh san".
• Adding a wildcard symbol may retrieve word variants: so sanh hoc tap, nghien cuu ((dong hoc) OR (dong co)) pho chong hoc xa hoi ban thanh san*.