Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len can dong snippets" » "len van dong snippets", "len dan dong snippets", "len cao dong snippets", "len con dong snippets", "lenh canh dong snippets", "ben canh dong 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: (((("len can dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("len can dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len can dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len can dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.