Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham hoi le snippets" » "pham hoai le snippets", "pham hoa le snippets", "cham hoi le snippets", "pham hoi ve snippets", "pham hai le snippets", "pham hoi e 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: (((("pham hoi 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: (((("pham hoi le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham hoi le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham hoi le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.