Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham hoc voi snippets" » "phap hoc voi snippets", "phau hoc voi snippets", "pham hoa voi snippets", "pham hoc vi snippets", "pham hoc vo snippets", "pham hoc noi 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: (((("pham hoc voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham hoc voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham hoc voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham hoc voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.