Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xac cham den snippets" » "xac pham den snippets", "tac pham den snippets", "toc cham den snippets", "xac cham nen snippets", "xac thai den snippets", "xac chat deo 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: (((("xac cham den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xac cham den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xac cham den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xac cham den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.