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