Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hap ban cheo snippets" » "hap han che snippets", "hap ban co snippets", "hap ban chat snippets", "lap ban cheo snippets", "hap dan cheo snippets", "nhat ban cheo 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: (((("hap ban cheo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hap ban cheo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hap ban cheo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hap ban cheo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.