Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong anh cua snippets" » "cong danh cua snippets", "dong anh cua snippets", "hong anh cua snippets", "cong manh cua snippets", "cong hanh cua snippets", "cong canh 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 anh 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 anh cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong anh cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong anh cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.