Perhaps you should try some spelling variations:
"nhung thoi luan van. biet the hieu luc xuc" » "nhung thi luan van. biet the hieu luc xuc", "phung thi luan van. biet the hieu luc xuc", "nhung loi luan van. biet the hieu luc xuc", "nhung hoi luan van. biet the hieu luc xuc", "nhung thai luan van. biet the hieu luc xuc", "nhung thoi luan van. biet the hieu luat xuc", "nhung thoi luan van. biet the hieu qua xuc", "nhung thoi luat van. biet the hieu luc xuc"
"nhung gi luan va. biet the hien cam xuc" » "nhung bi luan va. biet the hien cam xuc", "nhung bai luan va. biet the hien cam xuc", "nhung gi luan va. biet the hien cac xuc", "nhung gi luan va. biet the hien cau xuc", "nhung gi luan va. biet the hien giam xuc", "nhung gia luan va. biet the hien cam xuc", "nhung li luan va. biet the hien cam xuc", "nhung gi luat va. biet the hien cam 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 gi luan va. biet the hien cam xuc") or ("nhung thoi luan van. biet the hieu luc xuc"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("nhung gi luan va. biet the hien cam xuc") OR ("nhung thoi luan van. biet the hieu luc xuc"))*.
• Removing quotes may allow a broader search: (( nhung gi luan va. biet the hien cam xuc ) or ( nhung thoi luan van. biet the hieu luc xuc ))*.