Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua tu tong snippets" » "cua tu tuong snippets", "cua tu trong snippets", "cua tu dong snippets", "cua tuc tong snippets", "cua su tong snippets", "cua cu tong 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: (((("cua tu tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua tu tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua tu tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua tu tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.