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