Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang dat cua snippets" » "dung dat cua snippets", "dong dat cua snippets", "dan dat cua snippets", "dang dai cua snippets", "dang day cua snippets", "dang mat cua 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: (((("dang dat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang dat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang dat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang dat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.