Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phong do cua snippets" » "phong mo cua snippets", "phong so cua snippets", "khong do cua snippets", "phong doi cua snippets", "phong co cua snippets", "phong de cua 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 cua 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 cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phong do cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phong do cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.