Perhaps you should try some spelling variations:
"nhung thoi quan luan. doi tuong hoc moi" » "nhung thi quan luan. doi tuong hoc moi", "nhung loi quan luan. doi tuong hoc moi", "nhung tri quan luan. doi tuong hoc moi", "nhung thoi quen luan. doi tuong hoc moi", "nhung thong quan luan. doi tuong hoc moi", "nhung thoi quan luan. moi truong hoc moi", "nhung thoi quan luan. doi song hoc moi", "nhung thoi quan luan. doi truong hoc moi", "nhung thoi quan luan. doi tuong ho moi", "nhung thoi quan luan. doi duong hoc moi", "nhung thoi quan luan. doi tuong hoc noi"
"phung thi yen giang. noi dung hoc mot" » "phung thi kien giang. noi dung hoc mot", "phung thi van giang. noi dung hoc mot", "phung thi yen giang. hoc dung hoc mot", "phung thi yen giang. noi dong hoc mot", "phung thi yen giang. noi dung thuoc mot", "phung thi yen giang. noi trung hoc mot"

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 quan luan. doi tuong hoc moi") or ("phung thi yen giang. noi dung hoc mot"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("nhung thoi quan luan. doi tuong hoc moi") OR ("phung thi yen giang. noi dung hoc mot")).
• Removing quotes may allow a broader search: (( nhung thoi quan luan. doi tuong hoc moi ) or ( phung thi yen giang. noi dung hoc mot )).
• Adding a wildcard symbol may retrieve word variants: (("nhung thoi quan luan. doi tuong hoc moi") or ("phung thi yen giang. noi dung hoc mot"))*.