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