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