Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"san van can snippets" » "tan van can snippets", "luan van can snippets", "tran van can snippets", "san van canh snippets", "san van ban snippets", "san ban 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: (((("san van 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: (((("san van can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( san van can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("san van can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.