Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi tap cho snippets" » "phi thap cho snippets", "pha tap cho snippets", "phi tai cho snippets", "phi tap co snippets", "phi cap cho snippets", "phi tap chi 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 tap cho 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 tap cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi tap cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi tap cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.