Perhaps you should try some spelling variations:
"phung thoi quyen van. hoc dung coc mo" » "phung thi quyen van. hoc dung coc mo", "nhung thoi quyen van. hoc dung coc mo", "phuong troi quyen van. hoc dung coc mo", "phung thoi quen van. hoc dung coc mo", "phung thoi nguyen van. hoc dung coc mo", "phung thuoc quyen van. hoc dung coc mo", "phung thoi quyet van. hoc dung coc mo", "phung thoi huyen van. hoc dung coc mo", "phung thoi quyen van. hoc ung coc mo", "phung thoi quyen van. tac dung coc mo", "phung thoi quyen van. hoc cong coc mo", "phung thoi quyen van. hoc dung co mo", "phung thoi quyen van. hoc dung hoc mo", "phung thoi quyen van. hoc dung cac mo", "phung thoi quyen van. hoc dung uoc mo"
"nhung thi luan van. hoc dan hoc mon" » "nhung thoi luan van. hoc dan hoc mon", "phung thi luan van. hoc dan hoc mon", "nhung tri luan van. hoc dan hoc mon", "nhung thi lan van. hoc dan hoc mon", "nhung thi xuan van. hoc dan hoc mon", "nhung thi loan van. hoc dan hoc mon", "nhung thi luan van. hoc van hoc mon", "nhung thi luan van. hoc dan toc mon", "nhung thi luan van. hoc dai hoc mon", "nhung thi luan van. hoc dan hoc moi", "nhung thi luan van. hoc dan hoc mot", "nhung thi luan van. hoc dan hoc cong"

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 thoi quyen van. hoc dung coc mo") or ("nhung thi luan van. hoc dan hoc mon"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("phung thoi quyen van. hoc dung coc mo") OR ("nhung thi luan van. hoc dan hoc mon")).
• Removing quotes may allow a broader search: (( phung thoi quyen van. hoc dung coc mo ) or ( nhung thi luan van. hoc dan hoc mon )).
• Adding a wildcard symbol may retrieve word variants: (("phung thoi quyen van. hoc dung coc mo") or ("nhung thi luan van. hoc dan hoc mon"))*.