Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong xua cao snippets" » "cong cua cao snippets", "cong sua cao snippets", "cong suat cao snippets", "cong xa cao snippets", "cong xuan can snippets", "cong juan cao 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 cao 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 cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong xua cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong xua cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.