Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac san thi slippers" » "cac dan thi slippers", "cac van thi slippers", "cac ban thi slippers", "cac san thi slippery", "cac san thi grippers"
"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 san thi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac san thi slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac san thi slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac san thi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.