Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"san cong do snippets" » "sang cong do snippets", "van cong do snippets", "ban cong do snippets", "san cong dot snippets", "san cuong do snippets", "san cong so 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 cong do 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 cong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( san cong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("san cong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.