Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi trong do snippets" » "phi thuong do snippets", "choi trong do snippets", "nhin trong do snippets", "phi trong doi snippets", "phi trong dao snippets", "phi trong co 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 trong do 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 trong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi trong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi trong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.