Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc van hoe snippets" » "toc van code snippets", "hoc van hoe snippets", "toc san hoe snippets", "tac van hoe snippets", "toc van hoa snippets", "toc van hoc snippets", "toc van hieu snippets"
"python using java snippets" » "python using data 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: (((("toc van hoe snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc van hoe snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( toc van hoe snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc van hoe snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.