Perhaps you should try some spelling variations:
"dung toi luan va. tac trung hoc mo" » "dung toi luan va. trac trung hoc mo", "dung toi luan va. tai trung hoc mo", "dung toi luan va. tac trong hoc mo", "dung toi luan va. tac trung quoc mo", "dung tai luan va. tac trung hoc mo", "dung doi luan va. tac trung hoc mo", "dung tri luan va. tac trung hoc mo", "dung hoi luan va. tac trung hoc mo", "dung thi luan va. tac trung hoc mo", "dung toi lua va. tac trung hoc mo", "dung toi luan van. tac trung hoc mo", "dung toi luat va. tac trung hoc mo", "dung toi luan va. tac trung hoc moi", "dung toi luan va. tac trung hoc mot", "dung toi luan va. tac trung hoc mon"
"dung thoi que van. tin dung hoc mang" » "dung thi que van. tin dung hoc mang", "dung thuoc que van. tin dung hoc mang", "dung thong que van. tin dung hoc mang", "dung thoi quen van. tin dung hoc mang", "dung thon que van. tin dung hoc mang", "dung thoi que van. tin dong hoc mang", "dung thoi que van. tin dung thuoc mang", "dung thoi que van. tin dung khoa mang", "dung thoi que van. tin dung hoc bang", "dung thoi que van. tin dung hoc tang", "dung thoi que van. tin dung hoc hang", "dung thoi qua van. tin dung hoc mang", "dung thoi quy van. tin dung hoc mang", "dung thoi quyet van. tin dung hoc mang"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("dung toi luan va. tac trung hoc mo") or ("dung thoi que van. tin dung hoc mang"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("dung toi luan va. tac trung hoc mo") OR ("dung thoi que van. tin dung hoc mang")).
• Removing quotes may allow a broader search: (( dung toi luan va. tac trung hoc mo ) or ( dung thoi que van. tin dung hoc mang )).
• Adding a wildcard symbol may retrieve word variants: (("dung toi luan va. tac trung hoc mo") or ("dung thoi que van. tin dung hoc mang"))*.