Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoach tu hoc snippets" » "hoach thu hoc snippets", "hoach su hoc snippets", "hoach du hoc snippets", "hoach te 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: (((("hoach tu 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: (((("hoach tu hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoach tu hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoach tu hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.