Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho cong soi snippets" » "cao cong soi snippets", "cua cong soi snippets", "cac cong soi snippets", "cho cong so snippets", "cho cong goi snippets", "cho cong noi 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 cong soi 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 cong soi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho cong soi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho cong soi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.