Perhaps you should try some spelling variations:
"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"
"phung thi quan luan. biet the hien cam xuc" » "phung thi quan luan. biet the hien cac xuc", "phung thi quan luan. biet the hien cau xuc", "phung thi quan luan. biet the hien giam xuc", "phung thi xuan luan. biet the hien cam xuc", "phung tri quan luan. biet the hien cam xuc", "phung phi quan luan. biet the hien cam xuc"

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

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