Perhaps you should try some spelling variations:
"nhung thoi quan va. tac dung thuoc ma" » "nhung thi quan va. tac dung thuoc ma", "phung thi quan va. tac dung thuoc ma", "nhung loi quan va. tac dung thuoc ma", "nhung thoi quen va. tac dung thuoc ma", "nhung thong quan va. tac dung thuoc ma", "nhung thoi quan va. sach dung thuoc ma", "nhung thoi quan va. xay dung thuoc ma", "nhung thoi quan va. tin dung thuoc ma", "nhung thoi quan va. tac dung hoc ma", "nhung thoi quan va. tac dung duoc ma", "nhung thoi quan vi. tac dung thuoc ma", "nhung thoi quan ha. tac dung thuoc ma", "nhung thoi luan va. tac dung thuoc ma"
"nhung tri quan han. hoc dong co mo" » "nhung bai quan han. hoc dong co mo", "dung tri quan han. hoc dong co mo", "nhung bi quan han. hoc dong co mo", "nhung trinh quan han. hoc dong co mo", "nhung hai quan han. hoc dong co mo", "nhung mai quan han. hoc dong co mo", "nhung tri quan hanh. hoc dong co mo", "nhung tri quanh han. hoc dong co mo", "nhung tri quan ha. hoc dong co mo", "nhung tri quan han. hoc duong co mo", "nhung tri quan han. hoc cong co mo", "nhung tri quan han. hoc dung co mo", "nhung tri quan han. hoc dong co mot", "nhung tri quan han. hoc dong co so", "nhung tri quan han. hoc dong co ma"

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 va. tac dung thuoc ma") or ("nhung tri quan han. hoc dong co mo"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("nhung thoi quan va. tac dung thuoc ma") OR ("nhung tri quan han. hoc dong co mo")).
• Removing quotes may allow a broader search: (( nhung thoi quan va. tac dung thuoc ma ) or ( nhung tri quan han. hoc dong co mo )).
• Adding a wildcard symbol may retrieve word variants: (("nhung thoi quan va. tac dung thuoc ma") or ("nhung tri quan han. hoc dong co mo"))*.