Perhaps you should try some spelling variations:
"dung thoi ty van. tac trung hoc mo" » "dung thi ty van. tac trung hoc mo", "dung toi ty van. tac trung hoc mo", "dung thuoc ty van. tac trung hoc mo", "dung thoi ty van. trac trung hoc mo", "dung thoi ty van. tai trung hoc mo", "dung thoi ty van. tac trong hoc mo", "dung thoi ty van. tac trung quoc mo", "dung thoi ky van. tac trung hoc mo", "dung thoi nay van. tac trung hoc mo", "dung thoi ty van. tac trung hoc moi", "dung thoi ty van. tac trung hoc mot", "dung thoi ty van. tac trung hoc mon", "dung thoi ly van. tac trung hoc mo", "dung thoi ta van. tac trung hoc mo"
"dung cao quyet van. xay dung hoc mo" » "dung cach quyet van. xay dung hoc mo", "dung ra quyet van. xay dung hoc mo", "dung van quyet van. xay dung hoc mo", "duong cao quyet van. xay dung hoc mo", "dung cho quyet van. xay dung hoc mo", "dung co quyet van. xay dung hoc mo", "dung cao quyet van. xay dong hoc mo", "dung cao quyet van. xay dung thuoc mo", "dung cao quyet van. xay dung khoa mo", "dung cao quyet van. xay dung hoc moi", "dung cao quyet van. xay dung hoc mot", "dung cao quyet van. xay dung hoc mon"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("dung cao quyet van. xay dung hoc mo") or ("dung thoi ty van. tac trung hoc mo"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("dung cao quyet van. xay dung hoc mo") OR ("dung thoi ty van. tac trung hoc mo"))*.
• Removing quotes may allow a broader search: (( dung cao quyet van. xay dung hoc mo ) or ( dung thoi ty van. tac trung hoc mo ))*.