Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho cua den snippets" » "khi cua den snippets", "tho cua den snippets", "thao cua den snippets", "kho cua dan snippets", "kho cua nen snippets", "kho cua dang 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: (((("kho cua den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kho cua den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho cua den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho cua den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.