Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con thi hoai snippets" » "con thi hai snippets", "con thi hoa snippets", "con thi hoan snippets", "can thi hoai snippets", "co thi hoai snippets", "con chi hoai 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: (((("con thi hoai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con thi hoai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con thi hoai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con thi hoai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.