Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than voi hoc snippets" » "than vo hoc snippets", "tan voi hoc snippets", "than roi hoc snippets", "than hoi hoc snippets", "than vi hoc snippets", "than voi ho 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: (((("than voi 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: (((("than voi hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than voi hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than voi hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.