Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"linh su le snippets" » "lich su le snippets", "hinh su le snippets", "dinh su le snippets", "linh vu le snippets", "linh tu le snippets", "linh su ve 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: (((("linh su le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("linh su le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( linh su le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("linh su le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.