Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dien thi ca snippets" » "dien thoai ca snippets", "trien thi ca snippets", "dien tu ca snippets", "dien thi cam snippets", "dien thi cua snippets", "dien thi cai 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: (((("dien thi 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: (((("dien thi ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dien thi ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dien thi ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.