Perhaps you should try some spelling variations:
"nhung thoi quen vang. tai cong hoc mot" » "nhung thi quen vang. tai cong hoc mot", "phung thi quen vang. tai cong hoc mot", "nhung loi quen vang. tai cong hoc mot", "nhung thoi quan van. tai cong hoc mot", "nhung thoi que van. tai cong hoc mot", "nhung thoi que lang. tai cong hoc mot", "nhung thoi quen vang. tai dong hoc mot", "nhung thoi quen vang. tai cong hoa mot", "nhung thoi quen vang. tai cong coc mot", "nhung thoi quen vang. tai cong hoc moi"
"nhung bai luan van. moi tuong ho ma" » "nhung bai luan van. moi truong ho ma", "nhung bai luan van. doi tuong ho ma", "nhung bai luan van. moi huong ho ma", "nhung bai toan van. moi tuong ho ma", "nhung li luan van. moi tuong ho ma", "nhung vay luan van. moi tuong ho ma", "nhung bai luan van. moi tong hop ma", "nhung bai luan van. moi tuong hoc ma", "nhung bai luan van. moi tuong co ma", "nhung bai luan van. moi tuong ho ba"

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: (("nhung thoi quen vang. tai cong hoc mot") or ("nhung bai luan van. moi tuong ho ma"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("nhung thoi quen vang. tai cong hoc mot") OR ("nhung bai luan van. moi tuong ho ma")).
• Removing quotes may allow a broader search: (( nhung thoi quen vang. tai cong hoc mot ) or ( nhung bai luan van. moi tuong ho ma )).
• Adding a wildcard symbol may retrieve word variants: (("nhung thoi quen vang. tai cong hoc mot") or ("nhung bai luan van. moi tuong ho ma"))*.