Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc cho du snippets" » "luc cao du snippets", "nuoc cho du snippets", "luat cho du snippets", "luc cho cu snippets", "luc cho tu snippets", "luc cho duoc 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: (((("luc cho du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc cho du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc cho du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc cho du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.