Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc van du snippets" » "toc van code snippets", "hoc van du snippets", "toc san du snippets", "tac van du snippets", "toc van duy snippets", "toc van dau snippets", "toc van de 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 du 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 du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( toc van du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc van du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.