Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao dieu toc snippets" » "cao hieu toc snippets", "cau dieu toc snippets", "cac dieu toc snippets", "cao sieu toc snippets", "cao dieu tuoi snippets", "cao dieu ngoc 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: (((("cao dieu toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao dieu toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao dieu toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao dieu toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.