Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho do dong snippets" » "cho dao dong snippets", "cho do hong snippets", "cho co dong snippets", "cho doi dong snippets", "cho ro dong 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 do dong 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 do dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho do dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho do dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.