Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac san moi snippets" » "cac dan moi snippets", "cac van moi snippets", "cac ban moi snippets", "cac can moi snippets", "cac san noi 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 san moi 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 san moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac san moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac san moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.