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