Perhaps you should try some spelling variations:
"nhung thoi luan van. doi tuong ho so" » "nhung thi luan van. doi tuong ho so", "nhung loi luan van. doi tuong ho so", "nhung tri luan van. doi tuong ho so", "nhung hoi luan van. doi tuong ho so", "nhung thai luan van. doi tuong ho so", "nhung thoi luan van. moi truong ho so", "nhung thoi luan van. doi song ho so", "nhung thoi luan van. doi tong hop so", "nhung thoi luan van. doi tuong co so"
"phung thi que van. nuoi duong hoi _" » "phung thi que van. nguoi muong hoi _", "phung thi que van. noi dung hoi _", "phung thi que van. boi duong hoi _", "phung thi que van. nuoi duong loi _", "phung thi que van. nuoi dong hoi _", "phung thi que van. nuoi duong noi _", "phung thi hue van. nuoi duong hoi _", "phung thi quy van. nuoi duong hoi _", "phung nghi que van. nuoi duong hoi _", "phung thi qua van. nuoi duong hoi _", "phung thi quyet van. nuoi duong hoi _"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("nhung thoi luan van. doi tuong ho so") or ("phung thi que van. nuoi duong hoi _"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("nhung thoi luan van. doi tuong ho so") OR ("phung thi que van. nuoi duong hoi _")).
• Removing quotes may allow a broader search: (( nhung thoi luan van. doi tuong ho so ) or ( phung thi que van. nuoi duong hoi _ )).
• Adding a wildcard symbol may retrieve word variants: (("nhung thoi luan van. doi tuong ho so") or ("phung thi que van. nuoi duong hoi _"))*.