Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hao van he snippets" » "dao van he snippets", "ho van he snippets", "cao van he snippets", "hao van hoe snippets", "hao van hue snippets", "hao van de 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: (((("hao van he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hao van he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hao van he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao van he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.