Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quet lang ca snippets" » "que lang ca snippets", "quan lang ca snippets", "biet lang ca snippets", "quet lang cua snippets", "quet lang cao snippets", "quet hang ca 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: (((("quet lang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quet lang ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quet lang ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quet lang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.