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