Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phong su voi snippets" » "phong slu voi snippets", "thong su voi snippets", "phong tu voi snippets", "phong sua voi snippets", "phong su vi snippets", "phong so voi 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 su 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: (((("phong su voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phong su voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phong su voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.