Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phna dan cac snippets" » "hoa dan cac snippets", "chua dan cac snippets", "nha dan cac snippets", "phna dan cach snippets", "phna dang cac snippets", "phna dan ca 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: (((("phna dan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phna dan cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phna dan cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phna dan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.