Perhaps you should try some spelling variations:
"nhung bai quen vang. nguoi luong nguon mo" » "nhung bai quen vang. nguoi huong nguyen mo", "nhung bai quen vang. nguoi muong nguon mo", "nhung bai quen vang. nguoi thuong nguon mo", "nhung bai quen vang. nguoi nung nguon mo", "nhung bai quan van. nguoi luong nguon mo", "nhung bai que van. nguoi luong nguon mo", "nhung bai que lang. nguoi luong nguon mo", "nhung bai luyen vang. nguoi luong nguon mo", "nhung dai quyen vang. nguoi luong nguon mo", "nhung hai quan vang. nguoi luong nguon mo", "nhung bai quen vang. nguoi luong nguoi mo", "nhung bai quen vang. nguoi luong nguoi moi", "nhung bai quen vang. nguoi luong nguon goc"
"chung thi quynh lan. noi dung hoc mo" » "phung thi quynh lan. noi dung hoc mo", "chung chi quynh lan. noi dung hoc mo", "nhung thi quynh lan. noi dung hoc mo", "chung thi huynh van. noi dung hoc mo", "chung thi quynh lan. hoc dung hoc mo", "chung thi quynh lan. noi dong hoc mo", "chung thi quynh lan. noi dung thuoc mo", "chung thi quynh lan. noi trung hoc mo", "chung thi quynh lan. noi dung hoc moi", "chung thi quynh lan. noi dung hoc mot", "chung thi quynh lan. noi dung hoc mon"

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: (("chung thi quynh lan. noi dung hoc mo") or ("nhung bai quen vang. nguoi luong nguon mo"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("chung thi quynh lan. noi dung hoc mo") OR ("nhung bai quen vang. nguoi luong nguon mo")).
• Removing quotes may allow a broader search: (( chung thi quynh lan. noi dung hoc mo ) or ( nhung bai quen vang. nguoi luong nguon mo )).
• Adding a wildcard symbol may retrieve word variants: (("chung thi quynh lan. noi dung hoc mo") or ("nhung bai quen vang. nguoi luong nguon mo"))*.