Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van thi case snippets" » "van thi canh snippets", "van thi cam snippets", "van thi ca snippets", "van tai case snippets", "dan thi case snippets", "van thu case 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: (((("python using java snippets") or ("van thi case snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("van thi case snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( van thi case snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("van thi case snippets"))) or ("locating bug code snippets"))*.