Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lin vu cao snippets" » "lin wu cao snippets", "linh vuc cao snippets", "linh vua cao snippets", "lin cu cao snippets", "lin va cao 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: (((("lin vu cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lin vu cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lin vu cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lin vu cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.