Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phong do he snippets" » "phong mo he snippets", "phong so he snippets", "khong do he snippets", "phong do ke snippets", "phong do le snippets", "phong do ve 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: (((("phong do he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phong do he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phong do he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phong do he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.