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