Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len phoi cay snippets" » "len choi cay snippets", "len thoi cay snippets", "benh phoi cay snippets", "len nuoi cay snippets", "len phoi tai snippets", "len cho cay 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: (((("len phoi cay snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("len phoi cay snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len phoi cay snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len phoi cay snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.