Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac so hoc snippets" » "cac co hoc snippets", "cac bo hoc snippets", "cac ho hoc snippets", "cac mo hoc snippets", "cac so hoa 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: (((("cac so hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac so hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac so hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac so hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.