Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phieu lo de snippets" » "phieu o de snippets", "phieu luu de snippets", "thieu so de snippets", "phieu bo de snippets", "phieu mo de snippets", "phieu do de 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: (((("phieu lo de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phieu lo de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phieu lo de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phieu lo de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.