Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac don led snippets" » "cac dan led snippets", "cac mon led snippets", "cac doanh led snippets", "cac den led snippets", "cac dot leds 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: (((("cac don led snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac don led snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac don led snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac don led snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.