Perhaps you should try some spelling variations:
"nhung tri quan van. biet the hieu van duy" » "nhung bai quan van. biet the hieu van duy", "dung tri quan van. biet the hieu van duy", "nhung bi quan van. biet the hieu van duy", "nhung trinh quan van. biet the hieu van duy", "nhung hai quan van. biet the hieu van duy", "nhung mai quan van. biet the hieu van duy", "nhung tri quan va. biet the hieu van duy", "nhung tri quan luan. biet the hieu van duy", "nhung tri quan doan. biet the hieu van duy", "nhung tri quan van. biet the hieu va duy", "nhung tri quan van. biet the thien van duy", "nhung tri quan van. biet the lieu va duy", "nhung tri quan van. 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: (("nhung tri quan van. 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: (("nhung tri quan van. biet the hieu van duy") OR ("phung thi luan van. biet the hien cam xuc")).
• Removing quotes may allow a broader search: (( nhung tri quan van. biet the hieu van duy ) or ( phung thi luan van. biet the hien cam xuc )).
• Adding a wildcard symbol may retrieve word variants: (("nhung tri quan van. biet the hieu van duy") or ("phung thi luan van. biet the hien cam xuc"))*.