Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phong voi he snippets" » "khong voi he snippets", "phong phoi he snippets", "pho voi he snippets", "phong voi ho snippets", "phong moi he snippets", "phong vi he 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 voi 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 voi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phong voi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phong voi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.