Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than de le snippets" » "thanh de le snippets", "toan de le snippets", "than dieu le snippets", "than de ve snippets", "than do le snippets", "than de la 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: (((("than de 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: (((("than de le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than de le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than de le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.