Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham du cu snippets" » "thap du cu snippets", "tham do cu snippets", "pham duc cu snippets", "tham cu cu snippets", "tham su cu snippets", "tham da cu 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: (((("tham du cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tham du cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham du cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham du cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.