Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao do hoc snippets" » "dao o hoc snippets", "dao ho hoc snippets", "dao dong hoc snippets", "dao co hoc snippets", "dao do hoa snippets", "dao du hoc 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 do hoc 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 do hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao do hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao do hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.