Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan vi he snippets" » "nhanh vi he snippets", "nhan va he snippets", "nhan bi he snippets", "nhan vi ha snippets", "nhan gi he 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: (((("nhan vi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan vi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan vi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan vi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.