Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong duc doi snippets" » "cong suc doi snippets", "hong duc doi snippets", "cong dac doi snippets", "cong duc dai snippets", "cong duc loi snippets", "cong luc doi 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: (((("cong duc doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong duc doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong duc doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong duc doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.