Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len hang cau snippets" » "le hang cau snippets", "len nhung cau snippets", "lenh hanh cau snippets", "len hang dau snippets", "len hang ca 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 hang cau 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 hang cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len hang cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len hang cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.