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