Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cot lieu cua snippets" » "co lieu cua snippets", "vat lieu cua snippets", "so lieu cua snippets", "cot dieu cua snippets", "cot bieu cua snippets", "cot hieu 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: (((("cot lieu 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: (((("cot lieu cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cot lieu cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cot lieu cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.