Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan song cho snippets" » "lang song cho snippets", "can song cho snippets", "lam song cho snippets", "lan dong cho snippets", "lan sang cho snippets", "lan rong 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: (((("lan song 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: (((("lan song cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan song cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan song cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.