Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao minh hoa snippets" » "cao minh hoa snippets", "van minh hoa snippets", "duc minh hoa snippets", "dao minh hoang snippets", "dao trinh hoa snippets", "dao sinh hoat snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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: (((("dao minh hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao minh hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao minh hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao minh hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.