Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong xua can snippets" » "cong cua can snippets", "cong sua can snippets", "cong suat can snippets", "cong xuan can snippets", "cong xuan cang 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: (((("cong xua can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong xua can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong xua can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong xua can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.