Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan cho mon snippets" » "san cho mon snippets", "van cho mon snippets", "han cho mon snippets", "lan cho lon snippets", "lan cho moi snippets", "lan cho mot 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 cho mon 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 cho mon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan cho mon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan cho mon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.