Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho co tong snippets" » "cho co trong snippets", "cho co dong snippets", "cho co ton snippets", "cheo co tong snippets", "cho cao tong snippets", "cho con tong 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 co tong 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 co tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho co tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho co tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.