Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phna dan hoc snippets" » "hoa dan hoc snippets", "chua dan hoc snippets", "nha dan hoc snippets", "phna van hoc snippets", "phna dan toc snippets", "phna dai hoc 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 hoc 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 hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phna dan hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phna dan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.