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