Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vung gen can snippets" » "vung ven can snippets", "vung bien can snippets", "vung kem can snippets", "vung gen cay snippets", "vung ben canh snippets", "vung ngan can 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: (((("vung gen can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vung gen can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vung gen can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vung gen can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.