Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua cao cong snippets" » "qua cac cong snippets", "qua cao dang snippets", "qua cua cong snippets", "qua ca cong snippets", "qua cai cong 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: (((("qua cao cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("qua cao cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua cao cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua cao cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.