Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac dia cua snippets" » "cac di cua snippets", "cac giai cua snippets", "trac dia cua snippets", "cac gia cua snippets", "cac da cua 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 dia cua 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 dia cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac dia cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac dia cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.