Perhaps you should try some spelling variations:
"phung tri quan va. biet the hieu van duy" » "nhung tri quan va. biet the hieu van duy", "phong tri quan va. biet the hieu van duy", "phuong troi quan va. biet the hieu van duy", "phung trinh quan va. biet the hieu van duy", "phung hai quan va. biet the hieu van duy", "phung mai quan va. biet the hieu van duy", "phung tri quan va. biet the hieu va duy", "phung tri quan va. biet the thien van duy", "phung tri quan va. biet the lieu va duy", "phung tri quan vi. biet the hieu van duy", "phung tri quan ha. biet the hieu van duy", "phung tri luan va. biet the hieu van duy", "phung tri quan va. biet the hieu van dung"
"phung thi luan van. biet the hien cam xuc" » "phung thi lan van. biet the hien cam xuc", "phung thi xuan van. biet the hien cam xuc", "phung thi loan van. biet the hien cam xuc", "phung thi luan van. biet the hien cac xuc", "phung thi luan van. biet the hien cau xuc", "phung thi luan van. biet the hien giam xuc"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("phung tri quan va. biet the hieu van duy") or ("phung thi luan van. biet the hien cam xuc"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("phung tri quan va. biet the hieu van duy") OR ("phung thi luan van. biet the hien cam xuc")).
• Removing quotes may allow a broader search: (( phung tri quan va. biet the hieu van duy ) or ( phung thi luan van. biet the hien cam xuc )).
• Adding a wildcard symbol may retrieve word variants: (("phung tri quan va. biet the hieu van duy") or ("phung thi luan van. biet the hien cam xuc"))*.