Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong va cua snippets" » "dong va cua snippets", "cong ha cua snippets", "cong tac cua snippets", "cong va chua snippets", "cong via cua snippets", "cong ca 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: (((("cong va 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: (((("cong va cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong va cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong va cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.