Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nen chat co snippets" » "nhan chat co snippets", "van chat co snippets", "nen dat co snippets", "nen thuat co snippets", "nen chat cua snippets", "nen chat deo 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: (((("nen chat co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nen chat co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nen chat co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nen chat co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.