Perhaps you should try some spelling variations:
"phung thi luan van. biet the khien giam xuc" » "phung thi luan van. biet the hien giam xuc", "phung thi luan van. biet the thien giap xuc", "phung thi luan van. biet the nien giam xuc", "phung thi lan van. biet the khien giam xuc", "phung thi xuan van. biet the khien giam xuc", "phung thi loan van. biet the khien giam xuc", "phung thi luan van. biet the khien gian xu", "phung thi luan van. biet the khien gia muc", "phung thi luan van. biet the khien gia duc"
"phung thi quan luan. biet the hien cam 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", "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"

Try widening your search to All Fields.

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

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