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