Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap cai con snippets" » "phap tai con snippets", "phap ca con snippets", "phap cac con snippets", "phap bai con snippets", "phap chi con snippets", "phap hai con 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: (((("phap cai con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap cai con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap cai con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap cai con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.