Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong bao cho snippets" » "dong bao cho snippets", "cong ba cho snippets", "cong bo cho snippets", "cong bao cao snippets", "cong bao che snippets", "cong cao cho 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 bao cho 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 bao cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong bao cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong bao cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.