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