Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi nhat moi snippets" » "pham nhat moi snippets", "khoi nhat moi snippets", "moi nhat moi snippets", "phi nha moi snippets", "phi nhat mpsi snippets", "phi nhap mon 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: (((("phi nhat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi nhat moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi nhat moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi nhat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.